Magnetic CircuitPublished on 24/2/2012 & updated on 27/7/2018
As a result the magnetic field within the iron core is uniform. These lines of force or flux lines through the airspace, are not equally placed at all points, hence, field outside the core is not uniform. In order to make the design and analysis of a magnetic circuit easier, it is desired to produce a uniform field. Instead of using a straight iron core, if we have used an uniform cross-sectioned iron toroid, ideally, there would not be any scope for magnetic flux lines to pass through air. As a result the magnetic field within the toroid core is uniform. This is referred as completely enclosed magnetic circuit.
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