Question

A fuse is a short piece of wire of…… and …….?
(A) High resistance, low melting point
(B) high resistance, high melting point
(C) low resistance, low melting point
(D) low resistance, high melting point

Answer 1

Hint: The property of restricting a flow of electric current is called the Resistance of a fuse wire. And the property of melting of the fuse material with the application of temperature is called the melting point of a fuse wire.

Complete step by step answer:
A fuse is an electrical safety device that operates under flow of electric current in an electrical or electronic Appliance. A fuse is a short piece of metal which has a high Resistance and low melting point. When a high value of current appears through an electrical or an electronic device, the fuse wire melts immediately and thus protects the electrical or electronics appliances from the damage, by breaking the electrical circuit temporarily. The materials generally used for fuse are tin, lead or zinc. The fuse wire must have high resistance and low melting point because it is used only for the flow of small current. The fuse wire material should be selected in such a way that it should burn and break the circuit immediately, when a large amount of current flows through the circuit and protects the appliances from damage. Resistance of a fuse wire is the property of a material to resist the flow of electric current in the given circuit. Melting point of a material is the property in which the material gets melted or burnt under the application of a certain amount of temperature.
Therefore, the correct option is (A) High resistance, low melting point

Note: Fuse wire is extremely important in home. It saves damages to property and life due to electric malfunction at the time of extreme weather or high fluctuation of voltage.