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 [NCERT Exemplar Problems]
A. A/2
B. 3A/2
C. 2A
D. 3A
Answer:C
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 [NCERT Exemplar Problems]
A. A/2 B. 3A/2 C. 2A D. 3A