In given diagrams write the direction of magnetic field produced at point $P$ in form of $\otimes$ and $⊙$ .

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Solution

The direction of magnetic field at a point is found by pointing the thumb of right hand in the direction of carriage of current, and the direction of curling of fingers is the direction of magnetic field.
In the figure A, the thumb is to be pointed towards the current carrying direction. the magnetic field at P due to each of the small elemental current is into the plane. Hence the direction is $\otimes$ .

In the figure B, the thumb is to be pointed towards the current carrying direction. the magnetic field at P due to each of the small elemental current is out of the plane. Hence the direction is $⊙$ .

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In given diagrams write the direction of magnetic field produced at point P in form of ⊗ and ⊙.

In given diagrams write the direction of magnetic field produced at point $P$ in form of $\otimes$ and $⊙$ .