A current of 0.8 A is drawn by a filament of an electric bulb for 10 minutes. Find the amount of electric charge that flows through the circuit.

Given:
Current, I = 0.8 A
Time, t = 10 min = 10 x 60 = 600 s

To find:
Charge, Q

Solution:
When there is a net movement of electric charge across space, an electric current is present. It is the flow of charge per unit of time.

$\mathrm{I}=\frac{\mathrm{Q}}{\mathrm{t}}$
$\therefore \mathrm{Q}= \mathrm{I}\times \mathrm{t}$
$=0.8\times 600$
$=480 \mathrm{C}$

Therefore, the charge of 480 C will flow through the circuit.