 
                 
                InterviewSolution
 Saved Bookmarks
    				| 1. | How can one reverse the direction of magneticfield produced at the centre of a circular coilcarrying electric current? [1-mark, 2011] | 
| Answer» The direction of the magnetic field can be changed by changing the direction of the current. If a circular coil is carrying current in a clockwise direction then the direction of the magnetic field created at the centre of the coil will be inside the plane. And in a coil carrying current in an anti-clockwise direction will have the direction of the magnetic field outside the plan, at the centre of the coil. | |