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A potential difference of 220 V is applied across a resistance of 440 Omegain an electrical appliance. Calculate the current drawn and heat energy produced in 20 seconds. |
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Answer» Solution :V=220 V R = 440 `Omega` 1=? H =? V= IR `I = (V)/(R)` `=(220)/(440)` `=(1)/(2) = 0.5 A` I =0.5 `H = I^(2) Rt` `=(0.5)^(2) xx440xx20` H =2200 J |
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