Question

why does a fuse wire have lower melting point than that of connecting wires?​

Answer 1

a fuse is to prevent any kind of short circuit

thus,if excess of current flows in the wire

than heat will be produced according to joule's heating effect..

$heat = {i}^{2} rt$

since,the fuse should have low melting point so that it melts when excess of current flows and cuts off the circuit and the appliances are saved from getting damaged..

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