Advertisements
Advertisements
Question
Advertisements
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?
For a fuse, higher the current rating ________ is the fuse wire.
What is a fuse?
Describe with the aid of a diagram some form of a fuse which is used in the electric lighting circuit of a house. Give two reasons why a fuse must not be replaced by an ordinary copper 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.
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.
Identify the option that displays the correct wiring with correct colour code:
