A 25, W,220, V bulb and a 100, W,220, V bulb | vedclass

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(B) When bulbs are connected in parallel,the potential difference $(V)$ across each bulb is the same.The power consumed by a bulb is given by the form

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$100\, W$ bulb

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(B) When bulbs are connected in parallel,the potential difference $(V)$ across each bulb is the same.The power consumed by a bulb is given by the formula $P = \frac{V^2}{R}$.Since $V$ is constant,the power consumed is directly proportional to the rated power of the bulb $(P \propto P_{rated})$.Therefore,the bulb with the higher rated power will consume more electrical energy per unit time and glow more brightly.Thus,the $100\, W$ bulb will glow more brightly than the $25\, W$ bulb.

$A$ $25\, W$,$220\, V$ bulb and a $100\, W$,$220\, V$ bulb are connected in parallel across a $220\, V$ line. Which bulb will glow more brightly?

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