Question

A wire of resistance R is cut into five equal pieces. These five pieces of wire are then

connected in parallel. If the resultant resistance of this combination be R then the ratio of

resultant to the original will be?

Answer 1

HEY DEAR ... ✌

________________________



When cut into 5 pieces, resistance of each part is R/5.

So, equivalent resistance of the 5 pieces when connected in parallel is, 1/R1 = 5/R + 5/R + 5/R + 5/R + 5/R

=> R1 = R/25

So, required ratio is, R : R1 = 25 : 1


HOPE , IT HELPS ... ✌