Name: A Perfect Guide to Power and Energy
Uploaded: 2019-07-19
Duration: 8 min 57 s
Description: This video explained power and any relationship between energy and power. To know all the concepts related to power and energy is explained here in this video.

Question

Match the following:

Column A	Column B
1. Stretched bow	(a) kinetic energy
2. Rotating wheel	(b) work done by centripetal force
3. Zero work	(c) rate of doing work
4. Power	(d) converts mechanical energy into electrical energy
5. Electric generator	(e) potential energy

Accepted Answer

$1 .$ Stretched bow (e) potential energy

$1 .$ - (e) Work is done in a stretched bow; this is stored in the bow as its potential energy. This energy is converted into kinetic energy of the arrow when it is released.

$2 .$ Rotating wheel (a) kinetic energy

$2$ .- (a), A rotating wheel as they can do work. This energy is called kinetic energy. Kinetic energy is the energy due to virtue of its motion.

$3 .$ Zero work (b) work done by centripetal force

$3$ .- (b), Work done is said to be zero if the applied force is zero or displacement is zero as work done by centripetal force.

$4 .$ Power (c) rate of doing work

$4$ . - (c), Power depends on amount of work done as well as how fast the work is done. Power is the amount of energy transferred or converted per unit time.

$5$ . - (d), Electric generator or dynamo in turn converts the mechanical energy into the electrical energy. Basically all generators, big or small, have following parts: (i) magnet, (ii) armature coil and (iii) slip rings.

Column A Column B

$1 .$ Stretched bow (e) potential energy

$2 .$ Rotating wheel (a) kinetic energy

$3 .$ Zero work (b) work done by centripetal force

$4 .$ Power (c) rate of doing work

$5 .$ Electric generator (d) converts mechanical energy into electrical energy

Match the following:

Column A Column B

1. Stretched bow (a) kinetic energy

2. Rotating wheel (b) work done by centripetal force

3. Zero work (c) rate of doing work

4. Power (d) converts mechanical energy into electrical energy

5. Electric generator (e) potential energy

Important Questions on Energy

Learn and Prepare for any exam you want !

Match the following: Column A Column B 1. Stretched bow (a) kinetic energy 2. Rotating wheel (b) work done by centripetal force 3. Zero work (c) rate of doing work 4. Power (d) converts mechanical energy into electrical energy 5. Electric generator (e) potential energy

Important Questions on Energy

Learn and Prepare for any exam you want !

Match the following:

Column A Column B

1. Stretched bow (a) kinetic energy

2. Rotating wheel (b) work done by centripetal force

3. Zero work (c) rate of doing work

4. Power (d) converts mechanical energy into electrical energy

5. Electric generator (e) potential energy