The document explains the basic components and functions of electrical circuits, which include electric cells, wires, lamps, lamp holders, and switches. It describes how these elements work together to allow electricity to flow, highlighting the distinction between closed circuits (complete and allowing flow) and open circuits (broken and not allowing flow). Additionally, it mentions that some circuits occur naturally, such as lightning, while others are man-made, like those found in car batteries.

1. Circuit & Switch
• Circuit is path through which electricity can flow.
• We use electrical circuits everyday in all of our
electrical appliances such as electric kettle and
microwave ovens.

2. The main parts of a
circuit:
1. Electric Cell: cells with voltage of 1.5V or 3V are safe to use.
2. Wire: wire is made from metal because it’s a conductor in a circuit.
3. Lamp: lamp will light up when the circuit is complete
4. Lamp holder: a device in a circuit for holding lamp in place.
5. Switch: switch turns the electric current ON or OFF.

3. 1. Cell
2. Wire
3. Lamp
4. Lamp holder
5. Switch

4. • Some electric circuits are
natural like Lightning.
• Some electric circuits are man-
made like car battery.

5. Switch
• Switch is a device for closing or opening a
circuit.
• Switch turns the electric current ON or OFF.

6. When the switch is ON:
The circuit path is complete (closed).
Closed circuits = Electricity flow

7. When the switch is off: the circuit path is broken
(opened).
Open circuit = NO Flow