Current electricity MCQs, current electricity quiz answers 20 to learn high school physics courses online. Electrical energy and joules law multiple choice questions (MCQs), current electricity quiz questions and answers for online school degrees. Direct current and alternating current, electromotive force, electrical energy and joules law, ohm's law test for high school teacher certification.

Learn high school physics multiple choice questions (MCQs): potential difference across a circuit component can be measured by a, with choices galvanometer, vernier calipers, ammeter, and voltmeter for online school degrees. Free physics study guide for online learning electrical energy and joules law quiz questions to attempt multiple choice questions based test.

MCQ: Positive and negative terminals of direct current have

1. no polarity
2. fixed polarity
3. variable polarity
4. always negative polarity

B

MCQ: Potential difference across a circuit component can be measured by a

1. vernier calipers
2. galvanometer
3. ammeter
4. voltmeter

D

MCQ: SI unit for electromotive force is

1. J-1
2. C-1
3. JC-1
4. km-1

C

MCQ: Rate of energy transferred if a current of 0.5 A passes through a bulb connected across a battery of 6 V for 20 s is

1. 80 J
2. 20 J
3. 30 J
4. 60 J

D

MCQ: By applying a potential difference of 7 V across a conductor, a current of 2 A passes through it. energy obtained in 2.5 minutes is

1. 2000 J
2. 2500 J
3. 2100 J
4. 1800 J

C