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KVPY2012PhysicsMagnetic Effects of Current

A steady current I flows through a wire of radius r , length L and resistivity . The current produced heat in the wire. The rate of heat loss in a wire is proportional to its surface area. The steady temperature of the wire is independent of-

Options

  1. AL
  2. Br
  3. CI

Correct answer

A. L

Step-by-step solution

Concept of fuse wire

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