Fundamentholfundamenthol
JEE Main2019Physics
Q.

A copper wire is wound on a wooden frame, whose shape is that of an equilateral triangle. If the linear dimension of each side of the frame is increased by a factor of 3, keeping the number of turns of the coil per unit length of the frame the same, then the self inductance of the coil: 

  1. A

    Increases by a factor of 3

  2. B

    Decreases by a factor of

  3. C

    Decreases by a factor of 9

  4. D

    Increases by a factor of 27

Solution

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