Magnetic field due to currentMedium

Question

Net magnetic field at the centre of the circle O due to a current carrying loop as shown in figure is (θ < 108^o)

Options

A.zero

B.perpendicular to paper inwards

C.perpendicular to paper outwards

D.is perpendicular to paper inwards if θ ≤ 90^o and perpendicular to paper outwards if 90^o ≤ θ < 108^o

Solution

=
= > 0
∴ is directed outwards.

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