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
Answers
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1. Write two cases of energy conversion you see in your everyday life.
- In fans, electrical energy is converted into mechanical energy.
- 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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