The magnetic field at the centre of current carrying coil is B 0 If its radius is reduced to half keeping current the "same then magnetic field at its centre become:

Agniveer Vayu or IAF Group X 13 July 2021 Shift 3 Paper

Question : 18 of 70

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The magnetic field at the centre of current carrying coil is B₀ If its radius is reduced to half keeping current the "same then magnetic field at its centre become:

B₀
2B₀
4B₀
$\;{B_{0}}/{2}$

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