An electrical appliance draws a current of 0.5 A when applied potential difference across it is 220V. Calculate the amount of charge flowing through it in 30 minutes.

Question

Philoid · Accepted Answer

Given that;

Current = 0.5 A

Voltage = 220 V

Time = 30 min = 30 × 60 sec = 1800 sec

∵ 1 min = 60 sec)

We know that

⇒ Charge = Current × Time

⇒ Charge = 0.5 × 1800 C

⇒ Charge = 180 × 5 C

⇒ Charge = 900 C

Hence the charge flowing through appliance in 30 minutes is 900 Coulomb.