How does use of a fuse-wire protect electrical appliances ?
Text Solution
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A fuse wire is one which has high resistance and low melting point. This is connected in series with electrical installations. When the supply voltage exceeds the safe limit, more heat is produced in the fuse wire. (`because` rate of heat production `P = V^(2)//R`) and it melts. The circuit breaks and the damage to the electrical installations is saved.
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