Question

How is power related to energy?

Answer 1

Hint : Power is defined as the amount of energy that is transferred per unit of time. The unit of power is watt and it is equal to one joule per second. It is a scalar quantity.

Complete Step by step answer:
Energy is defined as the capacity for doing work. Potential energy, Kinetic energy, nuclear energy, chemical energy, electrical energy, thermal energy are the various forms of energy. Energy can be converted from one form to another form but is never lost.
Power and Energy are closely related to each other but are not of the same physical quantity Also, Energy is the ability to cause change while power is the rate of energy that is moved.
We know that the work is related to the amount of energy that is used while power can be used to express the change of the energy during the time interval. Thus the power is directly proportional to the work done and is inversely proportional to the time to do the work.
So work is the energy required to apply the force for moving an object to a distance and the force is parallel to the displacement and the power is the rate at which the work is done.
Thus we can say that the power is directly proportional to the energy consumed or produced.

Note:
1. Work cannot be done without energy and energy is the source of the capacity to do the work.
2. In simple terms we can say that the work changes the energy level. Whenever work is done on the system, energy is added to that system, and similarly, whenever the work is done by the system, energy is taken away from the system.