Electromagnetic Field Theory
Cork Screw rule is used to find

 direction of emf.
 direction of current.
 direction of magnetic field.
 direction of electric field.

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Electromagnetic Field Theory
A wire carrying current is bent in the form of a circular loop. Then the magnetic field around each portion of the wire will be

 none of above.
 parallel to the plane of the wire.
 parallel to half portion and perpendicular for the other half.
 perpendicular to the circumference of the wire.

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