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Two bulbs are rated 60 W, 220 V and 100 W, 220 V. Which bulb has a filament of greater resistance? |
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Answer» I=60 V=220 V=IR or R=V/I = 220 / 60=3.66 OHM SECOND BULB: I=100 V=220 R=V/I = 220/100=2.20 OHM Therefore first LAMP has more RESISTANCE. |
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