Question

Which one is having lesser resistance - 60w bulb or 40w bulb

Answer 1

Resistance of bulb is related by power by the following relation

`Power = (V^2)/(R)`

now we will have

`R = (V^2)/(P)`

so here we can say that resistance of bulb is inversely depends on power of the bulb

So here the bulb with less power will have more resistance.

So 60 W bulb will have lesser resistance than 40 W bulb.