Which component in an electrical circuit is specifically designed to melt and break the circuit in the event of an overload? MCQ with Answer and Explanation
Which component in an electrical circuit is specifically designed to melt and break the circuit in the event of an overload?
A. Switch
B. Capacitor
C. Fuse
D. Resistor
Answer: Option C
Solution (By JKExamLibrary)
A fuse is an electrical safety device consisting of a wire made of an alloy with a low melting point. If the current exceeds a safe limit (due to a short circuit or overload), the Joules heating (I²Rt) causes the wire to melt instantly, breaking the circuit and preventing fire or damage to appliances.
Explanation:
Nucleus contains protons (positive) and neutrons (neutral), collectively nucleons. Electrons orbit nucleus. Atomic number Z = protons, mass number A = protons + neutrons. Isotopes differ in neutron number.
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