Question

what is electromotive force

Answer 1

Heya Mate.............

In electromagnetism and electronics, electromotive force, is the electrical action produced by a non-electrical source. Devices provide an emf by converting other forms of energy into electrical energy, such as batteries or generators. Sometimes an analogy to water pressure is used to describe electromotive force. 

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Answer 2

• When there is no current, the potential difference between two electrodes is called Emf(E)
• E = V(+)-(-V(-))
• E= V(+)+V(-)
• But in reality ( when current flows) the potential difference across terminals of cell is not E.

Similar Terms:-

• Internal resistance of the cell: When the current flows within the cell the material of electrolyte offers observation to flow of current called internal resistance.
• Cell: Mother of circuit. It maintains potential difference which causes flow of current.It gives electrical energy to all circuit element.

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