Question

Which one has more resistance 100-watt bulb or 60-watt bulb both operating at 220 V ?​

Answer 1

Answer:

60-watt bulb has more resistance

Explanation:

v = 220v

when, p = 100w

then by formulla p = v^2/r

r = v^2/p

= (220*220)/100

= 48400/100

= 484 ohm

when, p = 60w

then by formulla p = v^2/r

r = v^2/p

= (220*220)/60

= 48400/60

= 806•66ohm

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