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Manipal MET2013PhysicsCurrent Electricity

The maximum current that flow in the fuse wire before it blows out, varies with the radius r as

Options

  1. Ar^ 3 / 2
  2. Br
  3. Cr^ 2 / 3
  4. Dr^ 1 / 2

Correct answer

A. r^ 3 / 2

Step-by-step solution

A s, I^2 R=h AP^2 ( L r^2 )=h 2 r l, l r^ 3 / 2

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