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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
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 connected in ______ with the ______ wire.
Two fuse wire of same length are rated 5 A and 20 A. Which of the two is thicker?
‘A fuse is rated 8 A’. can it be used with an electrical appliance of rating 5kW, 200V?
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.
(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.
State the purpose of using a fuse in a circuit.
