

Electrical Science - Power
Presentation
•
Construction
•
Vocational training
•
Easy
Donna Hollett
Used 1+ times
FREE Resource
7 Slides • 6 Questions
1
2
3
Multiple Choice
An engine's output of energy is 2250 Joules every 3 seconds. How much power did the engine develop in that time?
3 Watts
750 Watts
250 Watts
2250 Watts
4
Multiple Choice
5
6
Multiple Choice
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?
5 V
12 V
20 V
7
8
9
10
Multiple Choice
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?
An electric current produces a magnetic field.
A magnetic field produces an electric current.
An electric current flows from a negative to a positive terminal.
A magnetic field extends from a north pole of a magnet to its south pole.
11
Multiple Choice
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?
Does a positive charge build up in
the wire?
Does a negative charge build up in
the wire?
Does the current in the wire create
a magnetic field?
Does the current in the wire cause
the wire to heat up?
12
13
Poll
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