Question

a metallic wire of resistance r is cut into 10 pieces of equal length ,2 pieces each are joined in series and 5 pieces are join in parallel .what will be the effective resistance of combination

Answer 1

resistance in series is r/5 and resistance in parallel is r/2
total resistance = 7r/10

Answer 2

Resistance in series is r/5

Resistance in parallel is r/2

and, Total resistance is 7r/10

hope it is helpful.....