Practice electrical energy and joules law MCQs in physics quiz for online learning test. Current electricity quiz questions has multiple choice questions (MCQ), electrical energy and joules law test to practice as an energy saver light bulb that uses 11j of electrical energy gives same amount of light as ordinary bulb that uses . Answer key help with choices as 60 j, 50 j, 30 j and 22 j problem solving for competitive exam, viva prep, interview questions worksheets. Free physics revision notes to practice electrical energy and joules law quiz with MCQs to find questions answers based online learning tests.

MCQ. An energy saver light bulb that uses 11J of electrical energy gives the same amount of light as ordinary bulb that uses

1. 60 J
2. 50 J
3. 30 J
4. 22 J

A

MCQ. The amount of heat generated in a resistance due to flow of charges is equal to the product of square of current, resistance and the time duration. This statement is known as

1. Ohm's law
2. Joule's law
3. Newton's law
4. Pascal's law

B

MCQ. If a current of 0.8 A passes through a bulb connected across a battery of 5V for 30 s, then the rate of energy transferred to the bulb is

1. 30 J
2. 60 J
3. 120 J
4. 20 J

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. The process during which charges continuously move from a higher potential to a lower potential becomes a continuous source of

1. heat energy
2. light energy
3. chemical energy
4. electrical energy

D