Energy, Work and Power Multiple Choice Questions (MCQs) PDF Download - 5

MCQ 21: A moving object always possesses

1. Potential Energy
2. Kinetic Energy
3. Thermal energy
4. Magnetic energy

MCQ 22: Work can only be done when there is

1. Force
2. Power
3. Energy
4. Efficiency

MCQ 23: Work done must have the same unit as

1. Force
2. Power
3. Energy
4. Efficiency

MCQ 24: Knocking a nail into a wooden block with a hammer involves conversion between different forms of energy, which of the following choices present this conversion in correct order.

1. chemical energy → gravitational potential energy → kinetic energy → (sound energy + heat energy)
2. chemical energy → kinetic energy → gravitational potential energy → (sound energy + heat energy)
3. chemical energy → (sound energy + heat energy) → kinetic energy → gravitational potential energy
4. (sound energy + heat energy) → chemical energy → kinetic energy → gravitational potential energy

MCQ 25: We can say that one watt is defined as

1. rate of work done or energy conversion of one joule per second
2. rate of time of one second per joule
3. rate of distance of one meter per joule
4. rate of work done or energy conversion of one joule per meter