Which of the following is the unit of electrical energy?
Correct answer: C. kWh
- A. Kg m/s2
- B. Dyne
- C. kWh
- D. Joules / sec
Explanation
Kilowatt-hour (kWh) is indeed a unit of electrical energy. It's commonly used to measure the amount of energy consumed or produced over time and is the standard unit for billing electricity usage.
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About Measurements
Physical quantities are expressed with SI base and derived units, while measurement limits are described through accuracy, precision, absolute and percentage error, and significant figures. Dimensional analysis checks equations, derives relationships and detects inconsistent units, but it cannot determine numerical constants or distinguish quantities with identical dimensions.
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