Question

if 7 ampere current is flowing in a circuit for 5 hours then find the charge flowing in the circuit and also find the number of electrons flowing in the circuit​

Answer 1

For current carring circuit...

=> Current = Net charge flow / Time taken

=> I = Q/t

• Given :

=> I = 7 A

=> T = 5 hours = 5 × 3600 = 18000 s

• Calculation :

=> Q = I * t = 7 * 18000 = 126000 C

=> Q = n * e = 1.6 * 10^-19 * n

=> n = 1.6 * 10^-19 / 126000

=> n = 1.26 * 10^-14

• Answer :

Charge = 126000 C

Electron = 1.26 * 10^-14

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