Current Electricity Question 15
Question 15 - 31 January - Shift 1
The drift velocity of electrons for a conductor connected in an electrical circuit is $V_d$. The conductor in now replaced by another conductor with same material and same length but double the area of cross section. The applied voltage remains same. The new drift velocity of electrons will be
(1) $V_d$
(2) $\frac{V_d}{2}$
(3) $\frac{V_d}{4}$
(4) $2 V_d$
Show Answer
Answer: (1)
Solution:
Formula: Electric Current in a Conductor
$V_d=\frac{eE}{m} \tau$ that is independent of area
