Question

an electric bulb draws a current of 0.5 A 40 minutes then the amount of charge that flows through the circuit is

Answer 1

Given current drawn(I) = 0.5 A
           Time taken(t) = 40 min = 40*60 = 2400 s
           charge(Q) = ?
I = Q/t
0.5 = Q/2400
Q = 0.5*2400 = 1200 C

Answer 2

Answer:

An electric bulb draws a current of 0.5 A 40 minutes then the amount of charge that flows through the circuit is $1200C$

Explanation:

• Consider an electrical circuit flowing current I through it. t be the time of flow and Q be the total charge. We have the expression for the total charge as,

        $Q = It$     ...(1)

• In the question, it is given that,

       $I =0.5A$

       $t = 40min = 40\times 60 = 2400s$

       we know, the charge of one electron (e) is given by,

       $e = 1.6\times 10^{-19} C$

       Substituting these values into equation (1)

       $Q = 0.5\times 2400 = 1200C$