COMEDK2019PhysicsMagnetic Effects of Current

A current flows in a conductor from East to West. The direction of the magnetic field at a point above the conductor is

Options

Atowards North
Btowards South
Ctowards East
Dtowards West

Correct answer

A. towards North

Step-by-step solution

The direction of magnetic field in a current carrying straight wire is given by right hand thumb rule. If we point our thumb in a direction of East to West, the direction of magnetic field is found to be towards North, which is given by the curled fingers of our hand.

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