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Units of Electric Power Video Lecture | Crash Course: Class 10

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FAQs on Units of Electric Power Video Lecture - Crash Course: Class 10

1. What are the units of electric power?
Ans. The units of electric power are watt (W) or kilowatt (kW).
2. How is electric power measured?
Ans. Electric power can be measured using a wattmeter or by multiplying the voltage (V) and current (I) in a circuit. The formula for power is P = V x I.
3. Can you provide an example of calculating electric power?
Ans. Sure! Let's say a device has a voltage of 120 volts and a current of 2 amperes. To calculate the electric power, we can use the formula P = V x I. Thus, P = 120 V x 2 A = 240 watts.
4. What is the difference between watt and kilowatt?
Ans. The watt is the basic unit of electric power, whereas the kilowatt is equal to 1000 watts. Kilowatts are often used to express larger power values, such as in household appliances or industrial machinery.
5. How does electric power consumption affect electricity bills?
Ans. Electric power consumption directly affects electricity bills. The more power a device or household consumes, the higher the electricity bill will be. This is because the utility company charges for the amount of power used, usually measured in kilowatt-hours (kWh).
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