Question

Two metallic wires 'A' and 'B' are having same cross-sectional areas and same current passes through them. Find ratio of drift velocity of electrons in wire 'A' and 'B'.
[electron density of wire A = 8.0×1028m-3 and electron density of wire B = 9.0×1028m-3]

• A. $\frac 89$
• B. $\frac 98$
• C. $\frac {16}{27}$
• D. $\frac {27}{16}$

Answer 1

Answer: (B)

$\frac 98$

Answer 2

The correct option is (B): $\frac 98$.