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The length of potentiometer wire is 10 m and is connected in series with an accumulator.the e.m.f. of a cell balances 250cm length of wire.if the length of potentiometer wire is increase by 1m, calculate the new balancing length of wire. |
| Answer» 275 Explanation inversely VARIATION . mathematical DERIVATION is= E2/ E1 = N2/N1 =i1/i2 | |