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प्रश्न
What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
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उत्तर
A switch is an electric device that is used to complete or break an electric circuit. If the switch is ‘ON’, then a current can flow through the circuit. However, if the switch is ‘OFF’, then the current cannot flow through the circuit.
Electrical appliances such as table fans, electric lamps, washing machines, juicers and mixers, TV, radio, etc. have switches built into them.
संबंधित प्रश्न
Name the wire in a household electrical circuit to which the switch is connected
The following diagram shows three lamps and three switches 1, 2 and 3 connected with two cells.
- Name the switch / switches to be closed so as to light all the three lamps.
- How are the lamps connected: in series or in parallel?
The diagram below shows a dual control switch circuit connected to a bulb.
(i) Copy the diagram and complete it so that the bulb is switched ON.
(ii) Out of A and B which one is the live wire and which one is the neutral wire ?
What is meant by ‘MCB’? Which part of the domestic electric circuit does it replace?
What are ‘dual switches’? Mention their one main use.
Why should switches always be connected to the live wire? Give one precaution that should be taken while handling switches.
Would the bulb glow after completing the circuit shown in Figure if instead of a safety pin we use an eraser?
Would the bulb glow in the circuit shown in Figure?
Name the component of a circuit which help us to start or stop the appliances & safely and easily.
Name the component which connects electrical components to one another.
