Question

18. If resistance of the filament 1 point
increases with temperature,
what will be power dissipated
in a 220 V-100 W lamp when
connected to 110 V power
supply
O
25 W
0 < 25 W
0 > 25 W
O none of these​

Answer 1

Answer:

None of these

Step -by- step explaination

R=U×V/W=220×220/100=484

I=220/484

=0.454 A

Power=VI=110×0.454=50w