Wire 'a' has a lower melting point than wire 'b'.Which wire would u choose to make a fuse to a} allow more current to pass through and b} allow less current to pass through? Give reason for your answers.

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Solution

A fuse wire with a lower melting point should be chosen because when a large amount of current suddenly come then temperature goes very high and fuse wire melt and saves our appliances from harm.

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However long a fuse wire may be,the safe current that can be allowed is the same.

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