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प्रश्न
(a) Name the electrical appliance shown in the diagram below.
(b) Name the material of the wire used in this device.
(c) Name two important characteristics of this wire.
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उत्तर
- The electrical appliance shown in the diagram is called 'Fuse'.
- The material used in 'Fuse' wire is made up of an alloy of lead (Pb) and tin (Sn) having a low melting point of 250°C.
- Characteristics of Fuse wire:
- It has high resistivity.
- It has a low melting point.
- It prevents electrical appliances from being damaged by a surge of high voltage current.
- It is made up of alloys of lead (Pb) and tin (Sn).
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संबंधित प्रश्न
State the characteristics required in a material to be used as an effective fuse wire.
A fuse is rated 8A. Can it be used with an electrical appliance rated 5 KW, 200 V ? Give a reason.
Name the factors on which the heat produced in a wire depends when current is passed in it, and state how does it depend on the factors stated by you.
What is the rating of fuse used in light and fan circuits?
Identify the option that displays the correct wiring with correct colour code:
Name the material of fuse. State one characteristic of the material used for fuse.
State the purpose of using a fuse in a circuit.
Two fuse wires are rated 5 A and 20 A. Which of the two is longer ?
Why is it not advisable to use a piece of copper wire as fuse wire in an electric circuit?
