Question

In a safety fuse the temperature to which the wire gets heated is inversely proportional to the a)radius of the wire b)cube of the radius of the wire c)square of the radius of the wire d)fourth power of the radius of the wire

Answer 1

An electrical fuse works based on the principle of heat produced at the time of the current source flow via it.

As heat produced in wire is given that H=I2RT and by solving the equation in a fine manner.

Where” r” is radius of wire and temperature to wire which gets heated which are proportional to q square of radius of the wire.