Question

A cylindrical conductor of length *l and uniform area of cross section A
has resistance 'R'. The area of cross section of another conductor of same
material and same resistance but of length 2l is
А
(a)
2
3A
(b)
2
(c) 2A
(d) 3A​

Answer 1

Answer:

The resistance is given R so that the area depends on the length that is 2L; hence the area will also become double. Thus, the uniform area of cross-section of another cylindrical conductor will be 2A .

Explanation:

The resistance is given R so that the area depends on the length that is 2L; hence the area will also become double. Thus, the uniform area of cross-section of another cylindrical conductor will be 2A ....