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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
Explain the meaning of the student 'current rating of a fuse is 5A'.
State the characteristics required in a material to be used as an effective fuse wire.
For a fuse, higher the current rating ________ is the fuse wire.
A fuse is a short piece of wire of high ______ and of material of low ______.
(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 ?
Higher the current rating, _______ is the fuse wire.
Where are the cartridge type fuse used?
State the purpose of using a fuse in a circuit.
Name two safety devices which are connected to the live wire of a household electric circuit.
