Question

The e.m.f. of a cell is _____ the voltage across its terminals when no current flows. Fill in the blank.

• A. more than
• B. less than
• C. equal to
• D. none of these

Answer 1

Answer: (C)

equal to

Voltage across the cell terminals $V=E-Ir$

$\therefore$ $I=0$ $⟹V=E$

Thus e.m.f of a cell is equal to the voltage across its terminal when no current flows.