Electrical energy is measured in___________________?
Correct answer: D. kilowatt hour
- A. watt
- B. horse power
- C. kilo watt
- D. kilowatt hour
Explanation
Electrical energy used by homes and appliances is commonly measured in kilowatt-hours (kWh), where 1 kWh = 1000 W used for 1 hour. Option a, watt, is a unit of power rather than energy, so it is the most likely confusion.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Power
Power is the rate at which work is done or energy is transferred, with average power calculated over a time interval and instantaneous power found from P = Fv when force and velocity are aligned. Work includes units, mechanical efficiency, and the distinction between power and total work or energy.
Practise Work and Energy
748 free Work and Energy MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Power questions
Electrical energy is converted to heat at the rate of___________________?
The average power and instantaneous power become equal if work is done at __________________?
The consumption of energy by a 60 watt bulb in 2 sec is_________________?
An electric iron is marked 20 volts 500W. The units consumed by it in using if for 24 hours will be______________?
How much heat does a 40 W bulb generates in one hour ?
One kilowatt hour is the amount of energy delivered during _______________?