Advertisements
Advertisements
प्रश्न
What is an ‘electric fuse’? State its two characteristics of electric fuse.
Advertisements
उत्तर
The electric fuse is a safety device in electric circuits, used to limit the current and thus it acts as a safeguard for the household circuit and any electric appliance connected in the circuit from being damaged. Its characteristics are:
(i) It has a low melting point (m.p.) of about 200°C and is usually made from an alloy of 50% tin and 50% lead.
(ii) It has a high resistance so that its temperature rises rapidly and soon exceeds its m.p. and thus breaks it, when current passing through it exceeds the permissible limits. In such a case it acts as a switch.
APPEARS IN
संबंधित प्रश्न
To which wire should the fuse be connected?
For a fuse, higher the current rating ________ is the fuse wire.
A fuse is connected in ______ with the ______ wire.
How is a fuse put in an electric circuit?
Two fuse wire of same length are rated 5 A and 20 A. Which of the two is thicker?
Why fuse wire must always be connected in ‘live’ wire? Explain.
Identify the option that displays the correct wiring with correct colour code:
State the purpose of using a fuse in a circuit.
How does the length of a fuse wire depend on its current rating?
