Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same length. Which of the two bulbs will have thicker filament?pls attach image of guide
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The resistance of 200W bulb is lesser than the 100W bulb. ⇒Higher the resistance,lesser will be the value of A. Thus, thinner will be the wire. The wire of 200W bulb is thicker than 100W bulb, as it's resistance is lesser.
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