Question

Please explain magnetic field pattern produced by current carrying conductor having different shapes

Answer 1

bjective: To observe the magnetic field lines around current carrying conductor.Theory:1.Magnetic effect of electric currentis one of the major effects of electric current in use, without the applicationsof which we cannot have motors in the existing world.2.A current carrying conductorcreates a magnetic field around it, which can be comprehended by using magnetic lines of force or magnetic field lines.3.The nature of the magnetic field lines around a straight current carrying conductor isconcentric circles with centre at the axis of the conductor.4.The strength of the magneticfield created depends on the current through the conductor.5.The direction of the magnetic field lines of force around a conductor is given by theMaxwell’s right hand grip ruleorthe right handed corkscrew rule.​ ​Imagine that you are holding a current-carrying straight conductor in your right hand such that the thumb points towards the direction of current. Then your fingers will wrap around the conductor in the direction of the field lines of the magnetic field​ (See Fig.1)​. This is known asright hand thumb rule.Fig 1 - Right hand thumb rule.

Answer 2

direction of megnetic field is from north to south. its force is max at poles and min at its centre