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Question
State the purpose of using a fuse in a circuit.
Solution
The appliance and circuit must be protected from short circuits.
RELATED QUESTIONS
State the characteristics required in a material to be used as an effective fuse wire.
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.
A fuse is a short piece of wire of high ______ and of material of low ______.
A fuse wire is made of an alloy of ______ and ______. If the current in a circuit exceeds the current rating of the fuse wire, it ______.
Higher the current rating, _______ is the fuse wire.
Where are the cartridge type fuse used?
What is the rating of fuse used in light and fan circuits?
What is the rating of fuse used in power circuits, in domestic use?
(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.
'A fuse is rated 8 A'. Can it be used with an electrical appliance of rating 5 kW, 200 V?
