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An air-conditioner of 3.2 kW power rating is connected to a domestic electric circuit having a current rating of 10 A. The voltage of power supply is 220 V. What will happen when this air-conditioner is switched on? Explain your answer.

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An air-conditioner of 3.2 kW power rating is connected to a domestic electric circuit having a current rating of 10 A. The voltage of power supply is 220 V. What will happen when this air-conditioner is switched on? Explain your answer.

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Given: P = 3.2kW = 3200W,

Fuse current rating = 10 A

V = 220 V

We have

P = VI

3200 = 220 x I

I = 14.54 A

As the required current for the air-conditioner is 14.54 A and the rated current of the fuse is 10A, so the fuse will blow cutting off the power supply.

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