Drift velocity v_d is given by:
AeEτ/m
BeE/m
CmE/(eτ)
DeE × m × τ
Answer & Solution
Correct answer: A. eEτ/m
During relaxation time τ, electron accelerates with a = eE/m. So v_d = aτ = eEτ/m. Negative direction relative to E (because charge is negative).
Related questions
The reactance of a capacitor $C$ at frequency $f$ in an a.c. circuit is:A bird perched on a single high voltage wire is unharmed because:The two conservation laws embodied in Kirchhoff's rules are conservation of:The resistance offered by the cell itself is called:Which device detects the current in a Wheatstone bridge?In a Wheatstone bridge, the source is connected across the:The Wheatstone bridge is made up of how many resistors?At a junction, the current entering equals the current: