An electric motor takes 5 amperes current from a 220 volt supply line. Calculate the power of the motor and electrical energy consumed by it in 2 hours.

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Solution

Given I = 5A
V = 220V
∴ power = V $\times$ I
= 5 $\times$ 220
= 1100 W
= 1.1kW
Energy consumed = Power $\times$ Time
= 1.1 $\times$ 2
= 2.2 kW hr

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An electric motor takes 5 amperes current from a 220 volt supply line. Calculate the power of the motor and electrical energy consumed by it in 2 hours.

Given I = 5A V = 220V ∴ power = V×I = 5×220 = 1100 W = 1.1kW Energy consumed = Power×Time = 1.1×2 = 2.2 kW hr

Given I = 5A
V = 220V
∴ power = V $\times$ I
= 5 $\times$ 220
= 1100 W
= 1.1kW
Energy consumed = Power $\times$ Time
= 1.1 $\times$ 2
= 2.2 kW hr