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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.
What is a fuse?
A fuse is a short piece of wire of high ______ and of material of low ______.
Why is the fuse wire fitted in a porcelain casing?
How is a fuse put in an electric circuit?
‘A fuse is rated 8 A’. can it be used with an electrical appliance of rating 5kW, 200V?
Higher the current rating, _______ is the fuse wire.
How does the thickness of a fuse wire depend on its current rating?
Name two safety devices which are connected to the live wire of a household electric circuit.
