Question

Out of two wires X and Y of same material, wire Y is twice the length of wire X. which one has greater resistance? Justify your answer.

Answer 1

Answer:

Wire Y has more resistance.

Because wire Y is twice the length of wire X and they are made up of same material which means resistivity is same but resistance also depends on length of the wire. Resistance is directly proportional to length of the wire that is greater the length greater resistance.

Answer 2

Answer:

Wife Y

Explanation:

resistance $R= \frac{\rho l }{A}$

where $\rho$ is the resistivity of the material

 l : length of the wire

A : area of cross section

so if Wire Y has twice the length of the wire X  then it will have twice the resistance as that of wire X.

Wire Y has more resistance.