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Which has more resistance : 100 W bulb o...

Which has more resistance : 100 W bulb or 60 W bulb ?

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As `P = V^2//R, P prop 1//R or R prop 1//P`. Thus, the resistance of `60 W` bulb is more than that of `100 W` bulb.
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PRADEEP-ELECTRICITY-(Additional)Very Short Answer
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  13. Why is resistance less in parallel combination of resistors ?

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  18. What happens it the pd across a resistance is doubled ?

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  19. How does the resistance of a wire depend upon its radius ?

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  20. How does the resistance of a wire depend on its length ?

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