# Electromotive Force Calculator, Formula, Electromotive Calculation

## Electromotive Force Calculator:

Enter the values of work done W(J) and charge Q(C) to determine the value of electromotive force, E(V).

 Enter Workdone: J Enter Charge: C Result – Electromotive Force: V

## Electromotive Force Formula:

Electromotive force (EMF) is the voltage generated by a battery or by the magnetic force according to Faraday’s Law. It drives the flow of electrons in a circuit.

Electromotive Force, E(V) in volts is calculated by dividing the work done W(J) in joules by the charge Q(C) in coulombs.

Electromotive Force, E(V) = W(J) / Q(C)

E(V) = electromotive force in vols, V.

W(J) = workdone in joules, J.

Q(C) = charge in coulombs, C.

Electromotive Force Calculation:
1. A battery does 100 joules of work to move 20 coulombs of charge. Calculate the EMF of the battery.

Given: W(J) = 100J, Q(C) = 20C.

Electromotive Force, E(V) = W(J) / Q(C)

E(V) = 100 / 20

E(V) = 5V.

1. An electromotive force (EMF) of 12 volts and a charge of 3 coulombs, calculate the work done by the power source.