Question

Two wires A and B are made of same material and have the same length but different cross-sectional areas. If the resistance of wire A is 16 times the resistance of wire B, the ratio of the cross-sectional area of wire A to that of wire B

• A. 4 : 1
• B. 16 : 1
• C. 1 : 16
• D. 1 : 4

Answer 1

Answer:

C. 1 : 16

The Resistance of wire A is (RA) = 16 ×The Resistance of wire B is (RB)

$\frac{A_A}{A_B}=\frac{1}{16}$

1 : 16