A current of 0.09A flows through a wire of area of crosssection `1mm^(2)`. Find the current density in the wire.

A current of 3.2A is flowing in a wire of area of cross section 1 xx 10^(-7)m^(2) . The number of free electrons in the wire is 2 xx 10^(28) "per" m^(3) . Determine the drift velocity of electrons.

If a current of 0.5 ampere flows through a metallic wire for two hours, then how many electrons flow through the wire?

The current flowing through a wire depends on time as l= 3t^(2) + 2t+5 . The charge flowing through the cross section of the wire in time from t=0 to t=2s is