Advertisements
Advertisements
Question
What is a fuse?
Advertisements
Solution
An electric fuse is a safety device, which is used to limit the current in an electric circuit.
RELATED QUESTIONS
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 wire is made of an alloy of ______ and ______. If the current in a circuit exceeds the current rating of the fuse wire, it ______.
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.
Two fuse wire of same length are rated 5 A and 20 A. Which of the two is thicker?
How does the thickness of a fuse wire depend on its current rating?
The rating of a fuse connected in the lighting circuit is ______.
(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:
'A fuse is rated 8 A'. Can it be used with an electrical appliance of rating 5 kW, 200 V?
Why is it not advisable to use a piece of copper wire as fuse wire in an electric circuit?
