Question

A metal wire of resistance r is cut into three equal pieces which are then connected side by side to form a new wire, the length of which is equal to one third of the original length, the resistance of the new wire is

Answer 1

See,
Resistance = resistivity*length of conductor/ by its area
So the sum is in the picture
Hope it helps u
Thank u
3:16

Answer 2

Its 1/3rd of original resistance