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A 100-turn closely wound circular coil of radius 5 cm has a magnetic field of \(3.14\times {10}^{-3}T\) at its centre. T…

Q1

A 100-turn closely wound circular coil of radius 5 cm has a magnetic field of \(3.14\times {10}^{-3}T\) at its centre. The current flowing through the coil, and the magnitude of the magnetic moment of this coil are, respectively :
(Take \({\mu }_{0}=4\pi \times {10}^{-7}Tm/A\))

a

\(2.5\mathrm{A},2{\mathrm{Am}}^{2}\)

b

\(2.5\mathrm{A},20{\mathrm{Am}}^{2}\)

c

\(2\mathrm{A},4{\mathrm{Am}}^{2}\)

d

\(2\mathrm{A},10{\mathrm{Am}}^{2}\)

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