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Practice MCQs on electric power, physics MCQs for online test prep. Electric current, potential difference and resistance quiz has multiple choice questions (MCQ), electric power quiz questions and answers as electric power is related to, answer key with choices as current in component, potential difference, electrical resistance and both a and b for competitive exam prep. Free study guide is to learn electric power quiz online with MCQs to practice test questions with answers.

MCQ. Electric power is related to

1. current in component
2. potential difference
3. electrical resistance
4. both A and B

D

MCQ. Generators at a power station produce electric power at voltage

1. 45 kW
2. 50 kW
3. 60 kW
4. 25 kW

D

MCQ. To protect wiring from excessive passing of current is

1. voltmeter
2. fuse
3. galvanometer
4. resistance

B

MCQ. Current in a 60 W light bulb when it is connected to a 230 V power supply is

1. 0.26 A
2. 1.5 A
3. 2.6 A
4. 3.9 A

A

MCQ. Grid cables are 15 km long with a resistance of 0.20 Ω km-1, powers wasted as heat in these cables are

1. 50 kW
2. 60 kW
3. 20 kW
4. 30 kW

D

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