Which of the following best represents the electromotive force (emf) of an electric cell?
PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity
Problem
Which of the following best represents the electromotive force (emf) of an electric cell?
(a) Work done per unit charge between the terminals of the cell when no current is drawn (open circuit)
(b) Work done per unit charge in moving the charge once completely around the circuit, including through the cell
(c) Work done per unit charge within the cell only, excluding the external circuit
(d) Product of the cell's internal resistance and the current it supplies (i.e. Ir)