Question

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 R2 : then ratio of R1/R2 ?​

Answer 1

Answer:

You're answer is Option d)25.

Explanation:

Solution

Resistance of each one of the five parts =R5

Resistance of five parts connected in parallel is given by

1R'=1R/5+1R/5+1R/5+1R/5+1R/5

or 1R'=5R+5R+5R+5R+5R=25R or RR'=25.

Thus,(d) is the correct answer.