ICSE Class 10 Answered

e.m.f. of cell

Terminal voltage of cell

     1.It is measured by the amount of work done in moving a unit positive charge in the complete circuit inside and outside the cell.

     1. It is measured by the amount of work done in moving a unit positive charge in the circuit outside the cell.

     2.It is the characteristic of the cell i.e., it does not depend on the amount of current drawn from the cell

2. It depends on the amount of current drawn from the cell. More the current is drawn from the cell, less is the terminal voltage.

     3.It is equal to the terminal voltage when cell is not in use, while greater than the terminal voltage when cell is in use.

3. It is equal to the emf of cell when cell is not in use, while less than the emf when cell is in use.