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10 November, 16:01

Which has a larger resistance, a 60 W lightbulb or a 100 W lightbulb? Which has a larger resistance, a 60 W lightbulb or a 100 W lightbulb? There's not enough information to tell. The 100 W bulb. The 60 W bulb. Their resistances are the same.

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  1. 10 November, 19:12
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    You really can't tell.

    Power = I^2 * R = V^2 / R (unit in Watt)

    For P = I^2 * R

    Where we have P directly proportional to R, increase in Power leads to increase in R

    So if we have 100 will have higher resistance

    For P = V^2/R

    Power is inversely proportional to resistance.

    So increase in Power leads to decrease in resistance.

    60 watt will have a higher resistance.
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