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Study high school courses, online physics degree programs MCQs: energy saver light bulb that uses 11j of electrical energy gives same amount of light as ordinary bulb that uses with options 60 j, 50 j, 30 j and 22 j with physics question bank with answer key for homeschooling students to get prepare for exams. Free physics student portal for online learning electrical energy and joules law quiz questions, MCQs to find questions answers based online learning tests.

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

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

A

MCQ: Amount of heat generated in a resistance due to flow of charges is equal to product of square of current, resistance and 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 rate of energy transferred to bulb is

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

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: 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