Question

if the current of 0.15 ampere flow through a wire for 60 seconds then find the amount of charge that flow through the circuit

Answer 1

Solution:

Current, I = 0.5 A

Time, t = 60 seconds

 Convert in sec we get

Time, t = 2 × 60 × 60 s

 = 7200 s

Use formula

Charge           Q = It

Plug the values we get

                            = 0.5 A × 7200 s

    = 3600 Coulombs

Number of electrons = total charge / charge on 1 electrons

                                     = 3600/(1.6 ×10 19)

                                     =2.25 × 1022 electrons