Physics · 2019
JEE Main · 11 January 2019, Shift 2 · Q21
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…
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 $\displaystyle 3$, keeping the number of turns of the coil per unit length of the frame the same, then the self inductance of the coil:
Official answer
(1)
increases by a factor of $\displaystyle 3$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.