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प्रश्न
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उत्तर
An electric fuse is a device which is used to limit the current in an electric circuit. The use of a fuse thus safeguards the circuit and appliances connected in that circuit from being damaged. It is a short piece of wire made of an alloy of lead and tin. If the current passing through the fuse exceeds the safeguard limit the heat produced melts the fuse and this breaks the circuit.
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संबंधित प्रश्न
State the characteristics required in a material to be used as an effective fuse wire.
A fuse is connected in ______ with the ______ wire.
An electric kettle is rated 3 kW, 250 V. Give reason whether this kettle can be used in a circuit which contains a fuse of current rating 13 A.
Why fuse wire must always be connected in ‘live’ wire? Explain.
What is the rating of fuse used in power circuits, in domestic use?
Explain the significance of kWh meter, main switch and main fuse in house-circuiting.
(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.
Name the material of fuse. State one characteristic of the material used for fuse.
State the purpose of using a fuse in a circuit.
How does the length of a fuse wire depend on its current rating?
