Question

Two wires of A and B with circular cross-section are made up of the same material with equal lengths. Suppose R_A = 3R_B, then what is the ratio of radius of wire A to that of B?

Options

• 3

• ${\displaystyle \sqrt{3}}$

• ${\displaystyle \frac{1}{\sqrt{3}}}$

• ${\displaystyle \frac{1}{3}}$

Answer 1

${\displaystyle \frac{1}{\sqrt{3}}}$