A cylindrical conductor of length L and uniform area of cross section A has resistance R. Another conductor of length 2L and resistance R of the same material has area of cross section
Answers
Answered by
3
Question : A cylindrical conductor of length L and uniform area of cross-section A has resistance R. Another conductor of length 2L and resistance R of the same material has an area of cross-section.
R = rho L/A
In this case, the length of the conductor is doubled (2L) and so the resistance will be 2R. For the resistance to remain the same as R, the area of cross-section is also doubled as 2A.
Hence, the area of cross-section is 2A.
Similar questions