The terminal voltage of a cell is exactly equal to its emf under which one of the…
PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity
Problem
The terminal voltage of a cell is exactly equal to its emf under which one of the following conditions?
(a) Only when the external resistance is numerically equal to the internal resistance
(b) Whenever the current drawn is steady, irrespective of circuit resistance
(c) When the external circuit is open so that no current flows
(d) When the internal resistance of the cell is negligible (i.e., approaches zero)