Question

A current is flowing through the wire of diameter $d$ having drift velocity of electron $v_d$ in it. What will be new drift velocity when diameter of wire is made $\frac d4$ ?

• A. $4v_d$
• B. $\frac {v_d}{4}$
• C. $16v_d$
• D. $\frac {v_d}{16}$

Answer 1

Answer: (C)

$16v_d$

Answer 2

The correct option is (C): $16v_d$.