Question

find the relation between emf of internal resistance of cell

Answer 1

Electromotive Force and Internal Resistance. The electromotive force (e) or e.m.f. is the energy provided by a cell or battery per coulomb of charge passing through it, it is measured in volts (V). It is equal to the potential difference across the terminals of the cell when no current is flowing.

Answer 2

voltage drop (v) = current flowing through the conductor (I) × internal resistance (r)

》》 v = Ir

V is the terminal voltage while e is the electro motive force;

e= V+v

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