A wire of resistance R1 is cut into five equal pieces. These five pieces of wire are then connected in parallel. If the resultant resistance of this combination be R2, then the ratio R1/R2 is: a) 1/25 b) 1/5 c) 5 d) 25

ScienceClass 10ICSEAnswered 27 Mar 2026

Answer

The correct option is d) 25.

When a resistance wire is cut into five pieces, the ratio of the resistance and the resultant resistance obtained when the pieces are connected in parallel is 25.

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A wire of resistance R1 is cut into five equal pieces. These five pieces of wire are then connected in parallel. If the resultant resistance of this combination be R2, then the ratio R1/R2 is: a) 1/25 b) 1/5 c) 5 d) 25

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