Question

what do you mean by electromotive force​

Answer 1

Answer:

a difference in potential that tends to give rise to electric current

Answer 2

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★What is Electromotive Force?

Electromotive force is defined as the electric potential produced by either electrochemical cell or by changing the magnetic field. EMF is the commonly used acronym for electromotive force.

A generator or a battery is used for the conversion of energy from one form to another. In these devices, one terminal becomes positively charged while the other becomes negatively charged. Therefore, an electromotive force is a work done on a unit electric charge.

Electromotive force is used in the electromagnetic flowmeter which is an application of  Faraday’s law .

★Symbol for Electromotive Force

The electromotive force symbol is ε.

★What is Electromotive Force Formula?

Following is the formula for electromotive force:

ε = V + Ir

Where,

• V is the voltage of the cell
• I is the current across the circuit
• r is the internal resistance of the cell
• ε is the electromotive force

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