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The voltage across a lamp, is 6.32V when the current passing through it is 3.4 A. Find the power consumed to appropriate significant figures. |
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Answer» Voltage across a lamp=6.32 V (3 significant figure) Current flowing through lamp=3.4 A (2 significant figure) `therefore` Power consumed, `P=VI=(6.32)(3.4)=21.488 W` Answer should have minimum number of significant figure. Here, the minimum number of significant figure is 2 `therefore` Power consumed=2 W |
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