Question

5. A circular wire is carrying a current. Sketch the
shape of the magnetic field lines in a plane that is
perpendicular to the plane of the wire and passes
through its centre.​

Answer 1

Explanation:

Current-carrying conductor manufactures a magnetic field around it. The direction of current can be resolved by the right-hand thumb rules. If we curl a finger around a wire, such that thumb is pointing to the direction of flowing current then magnetic field lines take the direction in which our fingers curl the wire. Magnetic field = where, I is known as the current passing through a wire and r is the distance of the magnetic field from the current-carrying conductor, hence, the magnetic field is directly proportional to current and inversely proportional to the mentioned distance.