MPSC PYQScienceElectricityenglish
42) The cylindrical conductor has length ' L' and area of cross section 'A' and has resistance 'R' . Find an area of cross section of another cylindrical conductor of the same substance having resistance 'R' but length '2L' ? 1) 2 (a) 2) 3 2 (a) 3) 2A 4) 3A
A.2 A
B.3 2 A
C.2A
D.3A
Correct answer: C