Out of 60 watt and 40 watt lamps which one has higher electrical resistance when in use?

Question

Out of 60 watt and 40 watt lamps which one has higher electrical resistance when in use?

Answer 1

The 40 watt lamp! Incase you cared, below is a proof.

Using the relationship

P = V^2 / R

and assuming the voltage being used is 110V (like mains voltage)

40 = 110^2 / R ,    R  = 302

and

60 = 110^2 / R,      R  = 201

Answer 2

40

Answer 3

the 40W would have the most resistance.

Answer 4

40 watt

Power is inversely proportional to resistance.  The lower the power, the higher the resistance (assuming constant voltage)