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A fuse with a circular cross-sectional r...

A fuse with a circular cross-sectional radius of 0.15 mm blows at 15A. What is the radius of a fuse, made of same material which will blow at 120 A?

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To solve the problem step by step, we will use the relationship between the current flowing through a fuse and its radius, based on the principle of heat generation. ### Step 1: Understand the relationship between current and radius The heat generated in a conductor is proportional to the square of the current (I) and inversely proportional to the cube of the radius (R) of the conductor. Mathematically, this can be expressed as: \[ H \propto \frac{I^2}{R^3} \] ...
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