Electric Switch in Simple electric circuits – Class 6 Science Experiment

Chapter Name: Water in our life

Activity Name: Electric Switch in Simple electric circuits

Activity Description:

Required Items:

1. Wooden plank or thermocol sheet
2. Two drawing pins
3. Safety pin
4. Bulb
5. Wires
6. Battery or power source

Step by Step Procedure:

1. Set up the wooden plank or thermocol sheet as the base for the circuit.
2. Insert two drawing pins into the surface of the plank, labeling them A and B.
3. Insert the safety pin between A and B, ensuring one end is in contact with B and the other end is left free.
4. Connect one wire from the positive terminal of the battery or power source to the drawing pin A.
5. Connect another wire from the free end of the safety pin to one terminal of the bulb.
6. Connect a wire from the other terminal of the bulb to the negative terminal of the battery or power source, completing the circuit.
7. Observe the behavior of the bulb.

Experiment Observations:

1. Initially, when the safety pin is not touching pin A, the bulb does not glow.
2. When the safety pin is touched to pin A, the bulb starts glowing.

Precautions:

1. Handle electrical components with care to avoid electric shock.
2. Ensure proper insulation and secure connections in the circuit.
3. Use appropriate voltage and power sources for the experiment.
4. Keep flammable materials away from the circuit setup.

Lesson Learnt from Experiment:

The experiment demonstrates the working principle of an electric switch. The safety pin acts as a switch in the circuit. When the safety pin is not touching pin A, the circuit is open, and electricity cannot flow through, causing the bulb not to glow.

However, when the safety pin is touched to pin A, it closes the circuit, allowing the flow of electricity and causing the bulb to glow. This shows that an electric switch is used to open or close a circuit, controlling the flow of electricity to a device.