Learn Current electricity MCQs, current electricity quiz answers pdf, test prep 20 to study high school physics for online certificate courses. Practice "electrical energy and joules law Multiple Choice Questions and Answers (MCQs), current electricity quiz questions and answers for online education programs. Learn direct current and alternating current, electromotive force, electrical energy and joules law, ohm's law test prep for online degrees.

"The positive and negative terminals of direct current have" Multiple Choice Questions (MCQs) on current electricity with choices fixed polarity, no polarity, variable polarity, and always negative polarity for online education programs. Free physics study guide for online learning electrical energy and joules law quiz questions for taking online classes.

MCQ: The positive and negative terminals of direct current have

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

B

MCQ: The 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: The 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. The energy obtained in 2.5 minutes is

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

C