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Question
An electric fuse has a:
An electric fuse has a:
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Solution
The correct option is B High resistance and Low melting point
An electric fuse is a wire having high resistance and low melting point.
During a short circuit, the current in the circuit increases abruptly. When excess current flows through the fuse wire, it becomes very hot because of its high resistance and Joule heating. Since the melting point of this material is low, it melts easily on heating and breaks the circuit, thereby protecting other components.
An electric fuse is a wire having high resistance and low melting point.
During a short circuit, the current in the circuit increases abruptly. When excess current flows through the fuse wire, it becomes very hot because of its high resistance and Joule heating. Since the melting point of this material is low, it melts easily on heating and breaks the circuit, thereby protecting other components.
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