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in Physics by (24.2k points)
A long wire carries a steady curent . It is bent into a circle of one turn and the magnetic field at the centre of the coil is `B`. It is then bent into a circular loop of `n` turns. The magnetic field at the centre of the coil will be
A. nB
B. `n^(2)B`
C. `2nB`
D. `2n^(2)B`

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1 Answer

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by (24.0k points)
Correct Answer - b

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