Question

a piece of wire of resistance R is cut into 5 equal parts these parts are then connected in parallel is the equivalent resistance of this combination is a dash then the ratio of R Upon R' is

Answer 1

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 =R/5


All the five parts are connected in parallel.


∴equivalent resistance (R') is given as in the above attachment.