An electric motor takes 5A from a 220V source.Determine the power of the motor and the energy consumed in 2 hours.Do we have to convert the time into seconds?

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Solution

Dear Student ,
Here in this case , current , I = 5 A and Voltage , V = 220 V .
Therefore , power of the motor is ,
P =VI = $220 \times 5 = 1100 w a t t$
You can either convert time into seconds or not .
Here , time = 2 hours = 7200 seconds
Now energy consumed in 2 hours is ,
E = Pt = $1100 \times 2 = 2200 W h = \frac{2200}{1000} = 2 \cdot 2 K W h$
Regards

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