A simple
electrical circuit is one in which the current flows from the source to a load
and reaches back the source to complete the path.
As shown in above fig, the electrical
circuit should consist of the following.
- An energy source (cell) to provide the voltage needed to force the current through the circuit.
- Conductors through which the current can flow.
- A load (resistor ‘R’) to control the amount of current and to convert the electrical energy to other forms.
- A control device (switch ‘S’) to start or stop the flow of current.
- A Fuse safety device to interrupt the circuit in case of malfunction of the circuit (excess current)
