Question

A and B are two wires having equal mass and same material. if diameter of wire A is half of wire B . And resistance of wire A is R. find resistance of wire B in terms of R.

Answer 1

Answer:

Resistance of wire B is double than resistance of wire A.

Explanation:

R(A) = rho l/2/A

R(B) = rho l/A

R(B) = 2R