Question

Draw a circuit diagram showing the cell, switch and a bulb.

Answer 1

Hint: To draw a circuit diagram showing cell, bulb and switch, we must know what all these devices are and what are their functions. These are basic devices that we use in our household as well. Cells are used in remotes, clocks etc. Bulb is used as a source of light. Switch is used to turn on and off electrical appliances such as mixers, televisions etc. In a circuit, these three components are connected through wires.

Complete answer:

CELL: A cell is a device which uses chemical reaction to produce current. This chemical reaction is made by producing electricity. When one or more cells are combined, a battery is formed. A single cathode and anode together forms a cell and these electrodes are separate by an electrolyte to produce current and voltage. It converts chemical energy into electrical energy.

SWITCH: Switch is a device used to interrupt the flow of electricity. In simple words we can say, it is used to turn on or turn off electric appliances such as fans, washing machines, geysers etc. There are two types of switches. They are Mechanical switches and Electrical signals.

BULB: When a light bulb is connected to a power supply, current flows from one metal contact to the other. It has a metal filament fixed inside. When enough current is passed through the filament, the filament heats up and emits photons which are in the form of visible light.

Note:
When the switch is on, it means the circuit is closed and current is flowing. When the switch is off, it means the circuit is open and flowing current has stopped. So, when the switch is on, the cell pushes current to the bulb and it glows. Filament of an electric bulb is made up of tungsten. Cells are mostly used for tasks which require less energy such as lamps, clocks etc.