A dynamo is used to convert
A. mechanical energy into electrical energy
B. electrical energy into mechanical energy
C. electrical energy into magnetic energy
D. magnetic energy into mechanical energy
Answer: Option A
A. mechanical energy into electrical energy
B. electrical energy into mechanical energy
C. electrical energy into magnetic energy
D. magnetic energy into mechanical energy
Answer: Option A
Which of the following can do more work?
A. A raised hammer
B. A bullet fired by the gun
C. A moving stone
D. A rotating wheel
A. Energy released by a moving object
B. Energy emitted during mechanical work
C. The sum of the kinetic energy and potential energy of an object
D. Equal to the rate of work done
A. Chemical energy
B. Potential energy
C. Kinetic energy
D. Heat energy
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