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Electrical Science - Power

Electrical Science - Power

Assessment

Presentation

•

Construction

•

Vocational training

•

Easy

Created by

Donna Hollett

Used 1+ times

FREE Resource

7 Slides • 6 Questions

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Multiple Choice

An engine's output of energy is 2250 Joules every 3 seconds. How much power did the engine develop in that time?

1

3 Watts

2

750 Watts

3

250 Watts

4

2250 Watts

4

Multiple Choice

what is the power of a lamp whose current is 6 A and the voltage across it is 120 V?
1
120 W
2
720 W
3
16 W
4
10 W

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6

Multiple Choice

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If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 Ohms, what is the voltage across the light bulb?

1

5 V

2

12 V

3

20 V

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Multiple Choice

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A student placed a compass above a wire in a circuit. Here is the diagram of what happened.

Which of the following claims is supported by the evidence in the diagram?

1

An electric current produces a magnetic field.

2

A magnetic field produces an electric current.

3

An electric current flows from a negative to a positive terminal.

4

A magnetic field extends from a north pole of a magnet to its south pole.

11

Multiple Choice

Question image

A student builds a simple circuit and places a magnet under one of the circuit’s wires. When the switch is closed, charges flow in the circuit and the wire moves, as shown in the diagram below. Which question is the student most likely trying to answer?

1

Does a positive charge build up in

the wire?


2

Does a negative charge build up in

the wire?


3

Does the current in the wire create

a magnetic field?


4

Does the current in the wire cause

the wire to heat up?


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Poll

How confident do you feel about this topic now?

Very confident
Somewhat confident
Not confident
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