As shown in the figure, a long straight conductor with semicircular arc of radius $\frac{\pi}{10}$m is carrying current $\mathrm{I=3A}$. The magnitude of the magnetic field, at the center O of the arc is :(The permeability of the vacuum $=4\pi\times10^{-7}~\mathrm{NA}^{-2}$)

Question

As shown in the figure, a long straight conductor with semicircular arc of radius $\frac{\pi}{10}$m is carrying current $\mathrm{I=3A}$. The magnitude of the magnetic field, at the center O of the arc is :

(The permeability of the vacuum $=4\pi\times10^{-7}~\mathrm{NA}^{-2}$)

$4\mu\mathrm{T}$

$3\mu\mathrm{T}$

$6\mu\mathrm{T}$

$1\mu\mathrm{T}$

Solution

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