in a safety fuse the temperature to which the wire gets heated is directly proportional to
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An electrical fuse works on the principle of heat produced while current flows through it.
As heat produced in wire is given as
H=I^2RT
⇒H=I^2/[ρlA]T
⇒H=I^2[ρl/πr^2]T
where r is the radius of wire.
Thus the temperature to which wire gets heated is inversely proportional to square of radius of the wire.
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Answer:
the temperature to which the wire gets heated is inversely proportional to the. .. square of the radius of the wire.
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