$A$ flow of $10^{7}$ electrons per second in a conducting wire constitutes a current of

The current in a wire varies with time according to the relation $I = 4 + 2t$. The quantity of charge which has passed through a cross-section of the wire during the time $t = 2 \, s$ to $t = 6 \, s$ will be .............. $C$.

Given a current-carrying wire of non-uniform cross-section,which of the following is constant throughout the length of the wire?

The electric current in a conductor varies with time $t$ as $I = 2t + 3t^2$,where $I$ is in amperes and $t$ is in seconds. Find the total charge $Q$ (in $C$) that passes through the cross-section of the conductor from $t = 2 \ s$ to $t = 3 \ s$.

Define electric current when there is no steady flow of charge.

$A$ steady current is flowing in a metallic conductor of non-uniform cross-section. The physical quantity which remains constant is