*Which of the following is the appropriate change when a large amount of current flows through the fuse wire connected to the circuit so as to avoid damage of the electrical appliances in the house?*
1️⃣ The electric current breaks, as the temperature of the fuse wire rises.
2️⃣ The electric current breaks, as the fuse wire melts.
3️⃣ The temperature of fuse wire decreases.
4️⃣ The direction of current changes due to bending of the fuse wire.
Answers
Answer: The electric current breaks, as the fuse wire melts.
Explanation:
A fuse is the device to protect the electric circuits from over loading and short circuit.
Fuses are safety devices that are to be built into our electrical system. If there were no fuses and we operated too many appliances on a single circuit, the cable carrying the power for that circuit would get extremely hot, short circuit, and possibly start a fire. To prevent electrical overloads, fuses are designed to trip or blow, stopping the flow of current to the overloaded cable.
Fuse is a piece of wire of a material with a very low melting point. When a high current flows through the circuit due to overloading or short circuit, the wires gets heated and melts. As a result, the circuit is broken and current stops flowing.
Hence, the fuse element is made of zinc, copper, silver, aluminum, or alloys to provide stable and predictable characteristics.
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