Question

two bulb marked 100w 220v and 200w 200v which have tungsten filament of same lenght. which have the thicker filament​

Answer 1

Answer:

we have formula r=v^2/p

so for first we apply it r=220×220/100

r=484ohm

for 2nd case

r=200×200/200

r=200ohm

so by this we can say that first one is more thicker than second one as it has more resistance