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CBSE Class 10 Answered

why is the strength of magnetic feild lines maximum at center in a current carrying circular wire?
Asked by swatie dass | 29 Jun, 2013, 08:28: PM
answered-by-expert Expert Answer
When a current is passed through a circular coil, a magnetic field is produced around it. The lines of force are circular near the wire, but they become straight and parallel towards the middle point of the coil. In fact, each small segment of the coil is surrounded by such magnetic lines of force. At the center of the coil, all the lines of force aid each other due to which the strength of the magnetic field increases.
 
In the case of current carrying wire, you cannot really talk about in terms of the magenetic  poles but instead you can draw the field lines and see for yourself. 
Answered by | 30 Jun, 2013, 04:46: PM

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