Producing And Measuring Electricity

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| By Wmungly

Wmungly

Community Contributor

Quizzes Created: 1 | Total Attempts: 266

Questions: 7 | Attempts: 267 | Updated: Mar 18, 2023

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Multiple choice revision question on electricity

Questions and Answers

1.

What device do we use to measure the current in a circuit?
- A.
  
  Voltmeter
- B.
  
  Rheostat
- C.
  
  Digital Meter
- D.
  
  Ammeter
Correct Answer
D. Ammeter

Explanation
An ammeter is used to measure the current in a circuit. It is specifically designed to measure the flow of electric current. Unlike a voltmeter, which measures voltage, or a rheostat, which is used to control resistance, an ammeter is calibrated to directly measure the current passing through a circuit. It is an essential tool for electrical engineers and technicians to ensure that circuits are functioning properly and to troubleshoot any issues related to current flow.

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2.

The measure of the amount of electrical energy that a cell can hold is known as its.................
- A.
  
  Volume
- B.
  
  Capacity
- C.
  
  Time
- D.
  
  Amps
Correct Answer
B. Capacity

Explanation
Capacity refers to the measure of the amount of electrical energy that a cell can hold. It represents the maximum amount of charge that a cell can store. Volume is not the correct answer as it refers to the amount of space occupied by an object. Time is also not the correct answer as it is a measure of the duration. Amps is the unit used to measure electric current, not the measure of the amount of electrical energy that a cell can hold.

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3.

In a circuit what particle flow from the negative terminal to the positive terminal?
- A.
  
  Proton
- B.
  
  Neutron
- C.
  
  Electron
- D.
  
  Convectional current
Correct Answer
C. Electron

Explanation
In a circuit, electrons flow from the negative terminal to the positive terminal. Electrons are negatively charged particles and they move in response to an electric field. This flow of electrons constitutes an electric current, which is the movement of charge through a conductor. The flow of electrons from the negative terminal to the positive terminal is essential for the operation of electrical devices and the transfer of energy in a circuit.

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4.

A resistor that changes its resistance with changing light intensity
- A.
  
  BBC
- B.
  
  LED
- C.
  
  LDR
- D.
  
  DRL
Correct Answer
C. LDR

Explanation
An LDR (Light Dependent Resistor) is a resistor that changes its resistance with changing light intensity. It is a type of sensor that is commonly used in light-sensitive devices. When exposed to light, the resistance of the LDR decreases, and when in darkness, the resistance increases. This property makes it suitable for applications such as automatic lighting control, solar panels, and light meters. Therefore, the correct answer is LDR.

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5.

A type of battery that can be use many times.
- A.
  
  Reusuable battery
- B.
  
  Renewable battery
- C.
  
  Rechargeable battery
- D.
  
  Returnable battery
Correct Answer
C. Rechargeable battery

Explanation
The correct answer is "Rechargeable battery" because it is a type of battery that can be used multiple times by recharging it. Unlike disposable batteries, which are used once and then discarded, rechargeable batteries can be recharged and reused, making them a more sustainable and cost-effective option.

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6.

An area found around a magnet?
- A.
  
  Line area
- B.
  
  Ground
- C.
  
  Field
- D.
  
  Pasture
Correct Answer
C. Field

Explanation
A field is an area found around a magnet. In the context of magnets, a field refers to the region in which the magnetic force produced by the magnet can be detected. This magnetic field extends outwards from the magnet and can interact with other magnetic objects or materials within its range. Therefore, "Field" is the correct answer as it accurately describes the area surrounding a magnet.

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7.

The size of the induced potential difference in a coil increases if
- A.
  
  The speed of the proton movement increases
- B.
  
  The speed of the proton movement decreases
- C.
  
  The speed of the magnet movement increases
- D.
  
  The speed of the proton movement decreases
Correct Answer
C. The speed of the magnet movement increases

Explanation
When the speed of the magnet movement increases, the magnetic field passing through the coil changes at a faster rate. According to Faraday's law of electromagnetic induction, a change in magnetic field induces an electromotive force (EMF) in a coil. Therefore, an increase in the speed of the magnet movement leads to a larger induced potential difference in the coil.

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Current Version
Mar 18, 2023

Quiz Edited by
ProProfs Editorial Team
Nov 02, 2008

Quiz Created by
Wmungly

Producing And Measuring Electricity

What device do we use to measure the current in a circuit?

The measure of the amount of electrical energy that a cell can hold is known as its.................

In a circuit what particle flow from the negative terminal to the positive terminal?

A resistor that changes its resistance with changing light intensity

A type of battery that can be use many times.

An area found around a magnet?

The size of the induced potential difference in a coil increases if