A current of 0.1 A is drawn by a filament of an electric bulb for 15 minutes. What is the amount of electric charge that flows through the circuit ?
Answer & explanation
Correct answer: option 3
Current : I = 0.1 A;
Time : t = 15 minutes = 15 x 60 seconds
= 900 seconds
Charge : q = ?
We know : $I = \frac{q}{t}$
$0.1 A = \frac{q}{900 s}$
$q = 90 C$