CELLS AND SIMPLE CIRCUITS
CELLS AND SIMPLE CIRCUITS.
Introduction
Work done per unit charge is called electrical potential. Current is the flow of charge.
For current to be continuous, potential difference between the two points must be sustained.
Sources of continuous currents.
In this process work is continuously done in moving electrons against a repulsive force. A device in which the potential difference is sustained is called a cell .
A cell is a source of continuous current.