List of top Physics Questions on Drift Velocity asked in KCET

For a given electric current the drift velocity of conduction electrons in a copper wire is v_d and their mobility is μ . When the current is increased at constant temperature

A copper wire of length 1 m and uniform cross sectional area 5 × 10^-7 m² carries a current of 1 A. Assuming that there are 8 × 10²⁸ free electrons per m³ in copper, how long will an electron take to drift from one end of the wire to the other?