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Two electric bulbs, rated at (25 W,220 V) and (100 W,220 V), are connected in series across a 220 V voltage source. If the 25 W and 100 W bulbs draw powers P1 and P2 respectively, then : |
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Answer» Two electric bulbs, rated at (25 W,220 V) and (100 W,220 V), are connected in series across a 220 V voltage source. If the 25 W and 100 W bulbs draw powers P1 and P2 respectively, then : |
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