A 220 volt, 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be
750 watt
500 watt
250 watt
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
ANSWER (B)
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
ANSWER (B)