Welcome to the Quiz!
This quiz contains 11 questions from a mix of 1 subtopics.
Which of the following defines potential difference (voltage)?
work done per unit charge
energy gained per unit charge
energy transferred per unit time
power per unit charge
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What is the potential difference when 100 J of work is done to move 20 C of charge?
5 V
100 V
20 V
0.2 V
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What is the kinetic energy in Joules of an electron accelerated through a potential difference of 5 V?
8×10-18 J
1.6×10-17 J
8×10-19 J
4×10-18 J
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Which formula relates potential difference to kinetic energy for an electron?
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What is power defined as?
work done per unit charge
energy transferred per unit time
work done per unit time
energy transferred per unit charge
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What is the power when a current of 2 A flows through a potential difference of 12 V?
20 W
24 W
14 W
10 W
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What is electrical energy transferred when a power of 100 W is supplied for 30 seconds?
30 J
3,000 J
3 J
300 J
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What is the power when a potential difference of 230 V drives a current of 10 A?
2.3 kW
2300 J
1300 W
2300 kW
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An electric drill draws a current of 4 A from a 12 V battery. For how long in seconds can it operate if 1,200 J of electrical energy is available?
25 s
12 s
50 s
400 s
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What is the power dissipated in a resistor of 10 Ω when a current of 2 A passes through it?
0.4 W
5 W
40 W
0.2 W
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What power is dissipated in a 230 V filament lamp of resistance 115 Ω?
2000 W
460 W
400 W
180 W
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