Problem: Which has a larger resistance, a 60 watt lightbulb or a 100 watt lightbulb ?

FREE Expert Solution

Power:

P=iV

P=i2R

Resistance, R = P/i2

Take the voltage to be 230V for both the bulbs.

For 60 watt lightbulb, 

i = P/V = 60/230 = 0.26 A

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Problem Details

Which has a larger resistance, a 60 watt lightbulb or a 100 watt lightbulb ?

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