1. Lesson 4
Electricity Part 3

2. Symbols to Represent Different Electrical Components.

3. The electric circuit can be easily represented by the circuit diagram as shown above.
A battery, a switch, and a bulb that are connected with connecting wires form a simple circuit. When the switch is closed, the circuit forms a complete circuit around which a current flows.

4. Series Circuit
When two bulbs are connected next to each other in a circuit, they are said to be in a series.
The current flows through the bulbs in a single path. There are no branches in the circuit.

5. Parallel Circuit
When bulbs are connected separately to the same terminals of a battery, they are said to be connected in parallel.
The current from the battery flows through the three bulbs in three separate paths.
There are three branches in this circuit.

8. Series VS. Parallel Circuit

9. Test Yourself