Advertisements
Advertisements
Question
Solution
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.
APPEARS IN
RELATED QUESTIONS
To which wire should the fuse be connected?
Explain the meaning of the student 'current rating of a fuse is 5A'.
For a fuse, higher the current rating ________ is the fuse wire.
Higher the current rating, _______ is the fuse wire.
How does the thickness of a fuse wire depend on its current rating?
Why fuse wire must always be connected in ‘live’ wire? Explain.
(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.
Two fuse wires are rated 5 A and 20 A. Which of the two is longer ?
