$(a)$ Name the effect of electric current which is utilised in the working of an electrical fuse.
$(b)$ How is a fuse connected in a domestic circuit?

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(N/A) The electrical fuse works on the heating effect of electric current. When the current exceeds the safe limit,the heat generated melts the fuse wire,breaking the circuit.
$(b)$ An electrical fuse is always connected in series with the live wire of the domestic circuit to protect appliances from high current surges.

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