Question

The terminal potential difference of a cell is equal to the emf of the cell when:

• A. The cell is an open circuit.
• B. The internal resistance of the cell is zero.
• C. The load resistance $R$ is much greater than the internal resistance $r$.
• D. All are true

Answer 1

The correct option is D All are true

The terminal potential difference of a cell is equal to the emf of the cell when:

$\to$ The cell is an open circuit.

$\to$ The internal resistance of the cell is zero.

$\to$ The load resistance much greater than internal resistance