Foundations Of Electronics: Neets Module 1 Quiz
Dive into the intricate world of electronics with our "Foundations of Electronics: NEETS Module 1 Quiz." Tailored for those navigating the Navy Electricity and Electronics Training Series, this quiz delves deep into Module 1's core concepts.
Challenge your understanding of electrical basics, explore the dynamics of currents and circuits, and unravel the mysteries behind Ohm's Law. Whether you're an aspiring electronics enthusiast or a seasoned professional, this quiz offers an immersive exploration of fundamental principles.
Brace yourself for questions that demand a nuanced understanding of voltage variations and the essentials that power electronic systems. Take the quiz, elevate your comprehension Read moreof NEETS Module 1, and solidify your grasp on the foundational elements shaping the landscape of electronic mastery in the realm of naval training.
- 1.
Matter can be found in which of the following forms?
- A.
Solid
- B.
Liquid
- C.
Gaseous
- D.
Each of the above
Correct Answer
D. Each of the aboveExplanation
Matter can exist in different forms, including solid, liquid, and gaseous states. The correct answer, "each of the above," indicates that matter can be found in all of these forms. This means that matter can be in a solid state with a fixed shape and volume, a liquid state with a definite volume but no fixed shape, or a gaseous state with no fixed shape or volume. Therefore, matter can exist in any of these forms depending on the conditions of temperature and pressure.Rate this question:
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- 2.
A substance that CANNOT be reduced to a simpler substance by chemical means is called a/an
- A.
Element
- B.
Mixture
- C.
Compound
- D.
Solution
Correct Answer
A. ElementExplanation
An element is a substance that cannot be reduced to a simpler substance by chemical means. This means that it consists of only one type of atom and cannot be broken down into simpler substances through chemical reactions. Elements are the building blocks of matter and are represented by symbols on the periodic table.Rate this question:
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- 3.
A molecule is the smallest possible particle that retains the characteristic of which of the following substances?
- A.
An element
- B.
A mixture
- C.
A compound
- D.
A solution
Correct Answer
C. A compoundExplanation
A molecule is the smallest possible particle that retains the characteristic of a compound. Compounds are substances made up of two or more different elements chemically bonded together. Molecules are formed when atoms of these elements combine and form stable bonds. Therefore, a molecule is the smallest unit of a compound that still possesses the properties and characteristics of that compound.Rate this question:
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- 4.
What subatomic particle has a negative charge and a small mass?
- A.
Proton
- B.
Electron
- C.
Positron
- D.
Neutron
Correct Answer
B. ElectronExplanation
The subatomic particle that has a negative charge and a small mass is the electron. Electrons are found outside the nucleus of an atom and are responsible for carrying electrical current. They have a significantly smaller mass compared to protons and neutrons, and their negative charge balances out the positive charge of protons in an atom, making it electrically neutral.Rate this question:
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- 5.
What subatomic particle has a positive charge and a large mass?
- A.
Proton
- B.
Electron
- C.
Positron
- D.
Neutron
Correct Answer
A. ProtonExplanation
A proton is a subatomic particle that carries a positive charge and has a relatively large mass. It is one of the building blocks of an atom and is found in the nucleus along with neutrons. Electrons, on the other hand, have a negative charge and are much smaller in mass compared to protons. Positrons, although they have a positive charge, have a smaller mass than protons. Neutrons, on the other hand, have no charge and are slightly heavier than protons. Therefore, the correct answer is proton.Rate this question:
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- 6.
What subatomic particle has no charge?
- A.
Proton
- B.
Electron
- C.
Positron
- D.
Neutron
Correct Answer
D. NeutronExplanation
A neutron is a subatomic particle that has no charge. Unlike protons and electrons, which have positive and negative charges respectively, neutrons are electrically neutral. They are found in the nucleus of an atom along with protons, but they do not possess any electrical charge. This lack of charge allows neutrons to play a crucial role in stabilizing the nucleus and determining the overall behavior of an atom.Rate this question:
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- 7.
An atom is the smallest possible particle that retains the characteristic of which of the following substances?
- A.
An element
- B.
A mixture
- C.
A compound
- D.
A solution
Correct Answer
A. An elementExplanation
An atom is the smallest possible particle that retains the characteristic of an element. Elements are pure substances made up of only one type of atom. Therefore, the correct answer is an element.Rate this question:
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- 8.
When light is represented as a tiny packet of energy, what are these packets of energy called?
- A.
Angstroms
- B.
Photons
- C.
Wavelengths
- D.
Frequencies
Correct Answer
B. pHotonsExplanation
Photons are the tiny packets of energy that represent light. They are considered as the fundamental particles of light and exhibit characteristics of both particles and waves. Photons do not have mass but carry energy and momentum. They can interact with matter and are responsible for various phenomena such as reflection, refraction, and absorption. Therefore, photons are the correct answer to the question.Rate this question:
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- 9.
If light energy collides with an orbiting electron, what happens to the electron?
- A.
The electron will move around the same orbit faster
- B.
The electron will jump to an orbit further from the nucleus
- C.
The electron will jump to an orbit closer to the nucleus
- D.
The electron will merge with the nucleus
Correct Answer
B. The electron will jump to an orbit further from the nucleusExplanation
When light energy collides with an orbiting electron, the electron absorbs the energy and jumps to a higher energy level or orbit further from the nucleus. This is known as an electron transition or excitation. The electron will remain in this higher energy level until it releases the absorbed energy and returns to its original orbit, which may happen through the emission of light or heat.Rate this question:
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- 10.
The number of electrons in the outermost shell of an atom determines which of the following characteristics of the atom?
- A.
Valence
- B.
Atomic weight
- C.
Atomic number
- D.
Number of shells
Correct Answer
A. ValenceExplanation
The number of electrons in the outermost shell of an atom determines its valence. Valence refers to the ability of an atom to form chemical bonds with other atoms. The outermost shell, also known as the valence shell, is involved in chemical reactions and determines the atom's reactivity and ability to gain, lose, or share electrons. Therefore, the number of electrons in the outermost shell directly affects the valence and chemical behavior of the atom.Rate this question:
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- 11.
When an atom gains or loses an electron, which of the following terms applies?
- A.
Unbalanced
- B.
Lightened
- C.
Neutral
- D.
Ionized
Correct Answer
D. IonizedExplanation
When an atom gains or loses an electron, it becomes ionized. Ionization occurs when an atom becomes electrically charged due to the imbalance of protons and electrons. This process can result in the formation of positively charged ions (when an atom loses electrons) or negatively charged ions (when an atom gains electrons). Therefore, the term "ionized" accurately describes the state of an atom after it gains or loses an electron.Rate this question:
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- 12.
What is the main difference between conductors, semiconductors, and insulators?
- A.
The temperature differences
- B.
The physical state of their mass
- C.
The number of free electrons
- D.
The designations of the outer shells
Correct Answer
C. The number of free electronsExplanation
The main difference between conductors, semiconductors, and insulators lies in the number of free electrons. Conductors have a large number of free electrons, allowing them to easily conduct electricity. Semiconductors have a moderate number of free electrons, making them less conductive than conductors but still capable of conducting under certain conditions. Insulators have very few free electrons, resulting in their inability to conduct electricity effectively.Rate this question:
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- 13.
A substance with an excess of electrons is considered to be in what electrical state?
- A.
Neutral
- B.
Positive
- C.
Negative
- D.
Discharged
Correct Answer
C. NegativeExplanation
A substance with an excess of electrons is considered to be in a negative electrical state because electrons carry a negative charge. When there is an excess of electrons, the substance becomes negatively charged. This is because electrons are negatively charged particles, and their presence in excess creates an overall negative charge in the substance.Rate this question:
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- 14.
Which of following actions describes the easiest way to accumulate a static electric charge?
- A.
Friction between two conductors
- B.
Friction between two insulators
- C.
Pressure between two conductors
- D.
Pressure between two insulators
Correct Answer
B. Friction between two insulatorsExplanation
Friction between two insulators is the easiest way to accumulate a static electric charge. When two insulating materials rub against each other, the electrons from one material can transfer to the other material, resulting in a build-up of positive and negative charges. This transfer of electrons creates a static electric charge on the insulating materials.Rate this question:
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- 15.
An atom that contains 6 protons and 5 electrons has what electrical charge?
- A.
Positive
- B.
Negative
- C.
Neutral
- D.
Intermediate
Correct Answer
A. PositiveExplanation
An atom that contains 6 protons and 5 electrons has a positive electrical charge because protons carry a positive charge and electrons carry a negative charge. In this case, there are more protons than electrons, resulting in a net positive charge.Rate this question:
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- 16.
How do "like" and "unlike" charges react to one another?
- A.
Unlike charges repel each other, like charges repel each other
- B.
Unlike charges attract each other, like charges attract each other
- C.
Unlike charges repel each other, like charges attract each other
- D.
Unlike charges attract each other, like charges repel each other
Correct Answer
D. Unlike charges attract each other, like charges repel each otherExplanation
Unlike charges attract each other because they have opposite charges, while like charges repel each other because they have the same charge. This is due to the fundamental property of electric charges, where opposite charges attract and like charges repel.Rate this question:
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- 17.
What is/are the term(s) applied to the space between and around charged bodies in which their influence is felt?
- A.
Electric field of force
- B.
Electrostatic field
- C.
Dielectric field
- D.
Each of the above
Correct Answer
A. Electric field of forceExplanation
The term "Electric field of force" refers to the space between and around charged bodies where their influence is felt. This field is created by the presence of electric charges and exerts a force on other charged particles within its vicinity. It is responsible for the transmission of electric forces and plays a crucial role in understanding the behavior of charged particles.Rate this question:
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- 18.
Electrostatic lines of force are drawn in which of the following manners?
- A.
Entering negative charge, entering positive charge
- B.
Entering negative charge, leaving positive charge
- C.
Leaving negative charge, leaving positive charge
- D.
Leaving negative charge, entering positive charge
Correct Answer
B. Entering negative charge, leaving positive chargeExplanation
Electrostatic lines of force are drawn in a manner where they enter negative charges and leave positive charges. This is because negative charges repel each other, so the lines of force are drawn towards them. On the other hand, positive charges attract negative charges, so the lines of force are drawn away from them. This pattern helps to visualize the direction and strength of the electric field around charges.Rate this question:
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- 19.
Which of the following devices use magnetism?
- A.
Batteries
- B.
Light bulbs
- C.
High-fidelity speakers
- D.
Each of the above
Correct Answer
C. High-fidelity speakersExplanation
High-fidelity speakers use magnetism. This is because speakers have a magnet and a coil of wire known as a voice coil. When an electrical current passes through the voice coil, it creates a magnetic field that interacts with the magnet, causing the voice coil to move back and forth. This movement generates sound waves, producing the audio output from the speakers. Therefore, high-fidelity speakers rely on magnetism to function.Rate this question:
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- 20.
Magnetic materials have which of the following qualities?
- A.
They are attracted by magnets
- B.
They can be magnetized
- C.
Both 1 and 2 above
- D.
They are electrical insulators
Correct Answer
C. Both 1 and 2 aboveExplanation
Magnetic materials have the qualities of being attracted by magnets and being able to be magnetized. This means that they can interact with and respond to magnetic fields. Additionally, magnetic materials are not necessarily electrical insulators as some can conduct electricity.Rate this question:
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- 21.
Ferromagnetic materials have which of the following qualities?
- A.
They are all alloys
- B.
They all contain nickel
- C.
They make very weak magnets
- D.
They are relatively easy to magnetize
Correct Answer
D. They are relatively easy to magnetizeExplanation
Ferromagnetic materials are relatively easy to magnetize because they have strong magnetic properties. This means that when exposed to a magnetic field, the domains within the material align and create a strong magnetic field of their own. This property makes ferromagnetic materials useful in applications such as transformers, motors, and magnetic storage devices.Rate this question:
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- 22.
A material with low reluctance and high permeability such as iron or soft steel is used to make what type of magnet?
- A.
Temporary
- B.
Permanent
- C.
Residual
- D.
Natural
Correct Answer
A. TemporaryExplanation
A material with low reluctance and high permeability, such as iron or soft steel, is used to make a temporary magnet. This is because these materials can easily be magnetized and demagnetized, making them suitable for temporary applications.Rate this question:
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- 23.
The ability of a material to retain magnetism is called
- A.
Permeability
- B.
Retentivity
- C.
Reluctance
- D.
Ionization
Correct Answer
B. RetentivityExplanation
Retentivity refers to the ability of a material to retain its magnetism after being magnetized. It measures the extent to which a material can hold on to its magnetic properties once the external magnetic field is removed. Permeability, on the other hand, refers to the ease with which a material can be magnetized. Reluctance is the resistance offered by a material to the flow of magnetic flux. Ionization is the process of converting an atom or molecule into an ion by gaining or losing electrons. Therefore, the correct answer is Retentivity.Rate this question:
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- 24.
The law of magnetic poles states which of the following relationships?
- A.
Like poles attract, unlike poles attract
- B.
Like poles attract, unlike poles repel
- C.
Like poles repel, unlike poles repel
- D.
Like poles repel, unlike poles attract
Correct Answer
D. Like poles repel, unlike poles attractExplanation
The law of magnetic poles states that like poles repel each other and unlike poles attract each other. This means that if two magnets have the same polarity (both north or both south), they will push each other away. On the other hand, if two magnets have opposite polarities (one north and one south), they will be attracted to each other and stick together. This relationship is a fundamental principle in magnetism and helps explain how magnets interact with each other.Rate this question:
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- 25.
The north indicating pole of a compass needle is attracted to which of the following poles of the earth?
- A.
The geographic north pole
- B.
The magnetic north pole
- C.
The geographic south pole
- D.
The magnetic south pole
Correct Answer
B. The magnetic north poleExplanation
The north-indicating pole of a compass needle is attracted to the magnetic north pole of the Earth. It's important to note that the magnetic north pole of the Earth is actually a magnetic south pole in terms of magnetic polarity, which is why it attracts the north-indicating (or magnetic north) pole of a compass. This seemingly paradoxical situation arises because opposites attract in magnetism: a north pole of a magnet is attracted to a south pole.
The geographic north and south poles refer to points on the Earth's surface where its axis of rotation meets its surface, and are not related to the Earth's magnetic field, which is why options involving geographic poles are incorrect. The magnetic poles, on the other hand, are defined based on the Earth's magnetic field, where the field lines are vertical at the poles. Therefore, the north-indicating pole of a compass is attracted to the magnetic north pole.Rate this question:
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- 26.
Weber’s theory of magnetism assumes that magnetic material is composed of
- A.
Tiny molecular magnets
- B.
Domains of magnetic influence
- C.
Large blocks of material acting as magnets
- D.
Atoms with electrons spinning different directions
Correct Answer
D. Atoms with electrons spinning different directionsExplanation
Weber's theory of magnetism assumes that magnetic material is composed of atoms with electrons spinning in different directions. This is because the magnetic properties of a material are determined by the alignment and movement of its electrons. When electrons spin in different directions, their magnetic moments cancel each other out, resulting in a non-magnetic material. However, when electrons spin in the same direction, their magnetic moments add up, creating a magnetic field. Therefore, atoms with electrons spinning in different directions are a crucial component of magnetic materials.Rate this question:
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- 27.
According to the domain theory, if an atom with 26 electrons has 20 electrons spinning counterclock-wise, the atom is considered to be
- A.
Charged
- B.
Insulated
- C.
Neutralized
- D.
Magnetized
Correct Answer
D. MagnetizedExplanation
According to the domain theory, if an atom with 26 electrons has 20 electrons spinning counterclock-wise, it indicates that the atom has a net magnetic moment. This means that the atom is magnetized.Rate this question:
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- 28.
If a glass plate is placed over a magnet and iron filings are sprinkled over the glass, a pattern will be visible. What does this pattern indicate?
- A.
The magnetic field
- B.
The electrostatic field
- C.
The piezoelectric effect
- D.
The chemical reaction of the magnet and the filings
Correct Answer
A. The magnetic fieldExplanation
When a glass plate is placed over a magnet and iron filings are sprinkled over it, the pattern observed indicates the presence of a magnetic field. Iron filings align themselves along the magnetic field lines, forming a pattern that represents the shape and direction of the magnetic field. This phenomenon occurs because iron is a ferromagnetic material, meaning it can be magnetized and attracted to magnets. Therefore, the pattern formed by the iron filings confirms the presence and characteristics of the magnetic field generated by the magnet.Rate this question:
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- 29.
An imaginary line used to illustrate a magnetic effect is known as a/an
- A.
Magnetic pole
- B.
Force field pole
- C.
Magnetic line of force
- D.
Electrostatic line of force
Correct Answer
C. Magnetic line of forceExplanation
An imaginary line used to illustrate a magnetic effect is known as a magnetic line of force. These lines are used to represent the direction and strength of the magnetic field around a magnet or a current-carrying wire. They are not physical lines but are a visual tool to help understand the behavior of magnetic fields. Magnetic lines of force are used to explain the attraction and repulsion between magnets and the interaction between magnets and magnetic materials.Rate this question:
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- 30.
Which of the following is NOT a property of magnetic lines of force?
- A.
They form closed loops around the magnet
- B.
They leave the magnetic material at right angles to the surface
- C.
They cross each other at right angles
- D.
They leave the north pole and enter the south pole of the magnet
Correct Answer
C. They cross each other at right anglesExplanation
Magnetic lines of force do not cross each other at right angles. Instead, they either form closed loops around the magnet or leave the magnetic material at right angles to the surface. Additionally, they leave the north pole and enter the south pole of the magnet.Rate this question:
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Apr 17, 2024Quiz Edited by
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