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8. A bulb marked 12 V, 24 W operates on a12 volt battery for 20 minutes. Calculate:(i) the current flowing through it, and(ii) the energy consumed

Answer»

Given, V = 12 V , I = 2A ,t = 10 minR = V /I= 12/ 2= 6 ohmenergy supplied= I×I×R×t= 2×2 × 6× (10× 60)= 14400 J



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