The quantity of charge flowing past a point multiplied by time is current.

$(a)$ How is the direction of electric current related to the direction of flow of electrons in a wire?
$(b)$ Calculate the current in a circuit,if $500 \, C$ of charge passes through it in $10$ minutes.

$1 \, \mu A = \ldots \ldots \ldots \, A$

Identify the circuit (Figure) in which the electrical components have been properly connected.

The electric current that always flows in the same direction is called alternating current.

Define the unit of electric current.