A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R', then the ratio R/R' is − (a) (b) (c) 5 (d) 25

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(d) Resistance of a piece of wire is proportional to its length. A piece of wire has a resistance R. The wire is cut into five equal parts. Therefore, resistance of each part = All the five parts are connected in parallel. Hence, equivalent resistance (R’) is given as Therefore, the ratio is...
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(d) Resistance of a piece of wire is proportional to its length. A piece of wire has a resistance R. The wire is cut into five equal parts. Therefore, resistance of each part = All the five parts are connected in parallel. Hence, equivalent resistance (R’) is given as Therefore, the ratio is 25. read less
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