Question

Drift velocity varies with the velocity of electric field as per the relation

• A. $V_d = E^2$
• B. $V_d = ? E$
• C. $V_d = ? \frac {1}{E}$
• D. $V_d = ? E^2$

Answer 1

Answer: (B)

$V_d = ? E$

Answer 2

Drift velocity is given by $v_d = \frac {e}{m} \times \frac{V}{l}$ As $\, \, \, \, \, \, \, \, \, V = El . \, or \, E = \frac {V}{l}$ or $\, \, \, \, \, \, \, \, \, V_d = \frac {e}{m} \times \frac {El}{l}$ so, $\, \, \, \, \, \, \, \, V_d ? E$