# A 220 volt, 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be Option 1) 750 watt Option 2) 500 watt Option 3) 250 watt Option 4) 1000 watt.

As we learnt in

Power dissipiated in the circuit -

-

Required power

Option 1)

750 watt

This option is incorrect.

Option 2)

500 watt

This option is incorrect.

Option 3)

250 watt

This option is correct.

Option 4)

1000 watt.

This option is incorrect.

why isin’t this possible P = V/I P1 = 1000W, P2=?, V1=220V,V2=110V

I=P1/V1=1000/220=4.55

P2=I*V2

P2=4.55*110

P2=500W

why isin’t this possible

P = V/I

P1 = 1000W, P2=?, V1=220V,V2=110V

I=P1/V1=1000/220=4.55

P2=I*V2

P2=4.55*110

P2=500W

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