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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
To which wire should the fuse be connected?
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.
How is a fuse put in an electric circuit?
(i) Write one advantage of connecting electrical appliances in parallel combination.
(ii) What characteristics should a fuse wire have ?
(iii) Which wire in a power circuit is connected to the metallic body of the appliance ?
What is an ‘electric fuse’? State its two characteristics of electric fuse.
State the purpose of using a fuse in a circuit.
How does the length of a fuse wire depend on its current rating?
Why is it not advisable to use a piece of copper wire as fuse wire in an electric circuit?
