calculate the work done to move 1 c of charge per second
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An ampere is rate of flow of charges in coulomb per second.
Force exerted on charge Watt=
voltage difference X current.
V2-V1)* coulomb/ second =
Watt seconds = (V2-V1)* charge (coulomb)
Energy (work done) =(V2– (-) 10)* 4
100/4 = (V2+10)
V2=25–10 = 15 Volts
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