Question

two copper wire A&B are of equal length but the diameter of a is half the other find the resistance A/B​

Answer 1

Answer:

2:1

Explanation:

Wire A and B have same length but diameter of A is half the B

so, Let us assume the diameter of B is x and A is x/2

R = delta*L/A

for wire A

R = delta*L/x/2

for wire B

R = delta*L/x

Ra/Rb

L/x/2/L/x

L/x/2 * x/L

2/x * x

2/1

2:1 = A/B

Hope you will understand