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  • Two electric bulbs have tungsten filaments of the same length. If one of them gives and t

Two electric bulbs have tungsten filaments of the same length. If one of them gives 60 \mathrm{~W} and the other 100 \mathrm{~W}, then

Option: 1

100 \mathrm{~W}  bulb has a thicker filament
 


Option: 2

60 \mathrm{~W} bulb has thicker filament
 


Option: 3

Both filaments are of same thickness
 


Option: 4

It is not possible to get different wattages unless the lengths are different


Answers (1)

best_answer

P=V^2 / R. If P is more, R is less.R=\rho l / a. For less R,  a is more. So, the 100 \mathrm{~W} bulb has thicker element

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Gaurav

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