Question

The relation between terminal potential difference V and electromotive force E of a cell during charging is given by *
(a) V = E – Ir
(b) V = E + Ir
(c) V = E always
(d) V = E/Ir​

Answer 1

Answer:

The voltage output of a device is called its terminal voltage V and is given by V = emf − Ir, where I is the electric current and is positive when flowing away from the positive terminal of the voltage source.