Net magnetic field at the centre of the ...

Net magnetic field at the centre of the circle `O` due to a currying loop as shown in figure is `(thetalt180^(@))`
.

A

zero

B

perpendicular to paper inwards

C

perpendicular to paper outwards

D

is perpendicular to paper inwards if `theta le 90^(@)` and perpendicular to paper outward of `90^(@)letheta lt180^(@)` .

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The correct Answer is:

C

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