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प्रश्न
Would the bulb glow after completing the circuit shown in Figure if instead of a safety pin we use an eraser?
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उत्तर
Erasers are bad conductors of electricity. They do not conduct electricity. The circuit becomes an open circuit. Hence, the bulb will not glow if a safety pin is replaced with an eraser.
संबंधित प्रश्न
Name the wire in a household electrical circuit to which the switch is connected
What is the purpose of a switch in a circuit?
A switch is not touched with wet hands while putting it on or off. Give a reason for your answer.
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 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.
Complete the drawing shown in Figure to indicate where the free ends of the two wires should be joined to make the bulb glow.
What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
In which position is the key placed in a circuit?
