Entry Test MCQ :: Current Electricity

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An electric iron is marked 20 volts 500W. The units consumed by it in using if for 24 hours will be

[A].	12	[B].	24
[C].	5	[D].	1100

Answer: Option A

ASAD ULLAH said:

tell me the formula of this question

Naa MalOom said:

Forget the voltage, you have wattage (per hr) Energy consumption (kwh) = Power (kw) x Time (h) Energy consumption = 0.5 x 24 Energy consumption = 12 kilowatt hours