Question

answer the following questions:

1. Write two cases of energy

conversion you see in your

everyday life .

2. What is power? What is its unit?

3. Is power a scalar or vector quantity?

4. State commercial unit of energy.

Plz give the correct answers.Correct answers will be marked as brainliest ​

Answer 1

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1. Write two cases of energy conversion you see in your everyday life.

1. In fans, electrical energy is converted into mechanical energy.
2. In TVs, electrical energy is converted into light and sound energy.

2. What is power? What is its unit?

• Power (P) is the rate at which energy is transferred or converted. Thus, power equals work divided by time (P = W / t). The SI unit of power is the watt (W).

3. Is power a scalar or vector quantity?

• As power doesn't have any direction, it is a scalar quantity. Also, power is the ratio of two scalar quantities.

4. State commercial unit of energy.

• The commercial unit of energy is Kilowatt-hour denoted by kWh. One kilowatt-hour is defined as the amount of energy that is consumed by a machine in one hour working at a constant rate of one kilowatt.

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