Question

An electric lamp draw's a current of $0.3$ ampere and is used for $6$ hours every day for a month (30 days). Calculate the amount of charge that flows through the circuit everyday and for a month.

Answer 1

$1Ampere=1coulomb/s$ so $0.3Amp=0.3C/s$

In one day it is used for $6hours=6\times 3600seonds=21600second$

So equivalent charge flown in one day$=0.3\times 21600C=6480Coulomb$

For one $month$ just multiply above value by $30$ we get, $charge=194400$ $coulomb$