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Two conducting wires of same material, equal length and equal diameter are first connected in series and then in parallel. Compare the equivalent resistance in two cases. |
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Answer» Explanation:Since the two wires have same material, length and diameter, they have the same RESISTANCE. Let the resistance of each wire be R.Let applied POTENTIAL difference be V.R series =R 1+R2 =R+R=2RP series=V²/R =V²/(2R)..........(i)1/R parallel= 1/R1+/1R2R parallel=R/2P parallel=V²/R parallel =2V²/R............(II)DIVIDING (ii) from (i),P parallel/P series=1/4HOPE THIS HELPS YOU |
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