Home
Class 12
PHYSICS
Fuse wire is a wire of...

Fuse wire is a wire of

A

high resistance and high melting point

B

high resistance and low melting point

C

low resistance and low melting point

D

low resistance and hight melting point.

Text Solution

Verified by Experts

Fuse wire must have high resistance (per unit length `&` low melting point.
Promotional Banner

Similar Questions

Explore conceptually related problems

Complete the following sentences : A fuse wire is made of an alloy of ................... If the current in a circuit exceeds the current rating of the fuse wire, it ................

Two fuse wires are rated 5 A and 20 A. Which of the two is (i) thicker, (ii) longer ?

A uniform wire resistance 100(Omega) is melted and recast in a wire of length double that of the original . What would be the resistance of the wire?

In figure the upper wire is made of steel and the lower of copper. The wires have equal cross section. Find the ratio of the longitudinal strains developed in the two wires.

Why is it not advisable to use a piece of copper wire as fuse wire in an electric circuit ?

A fuse wire with radius 1 mm blows at 1.5 amp . The radius of the fuse wire of the same material to blow at 3 A will be

Name the material used for making a fuse wire. Give a reason.

Assertion: Fuse wire must have high resistance and low melting point. Reason: Fuse is used for small current flow only.

(i) What is the function of earth wire in electrical instruments? (ii) Explain what is short circuiting an electric supply. (iii) What is the usual current rating of the fuse wire in the line to feed?

A fuse wire with a circular cross-section and having a diam eter of 0.4mm blows with a current of 3 ampere. The value of current for which another fuse wire made of the same material but having circular co rss-section with diameter of 0.6mm will blow is:-