write the formula for magnetic dipole moment of a current carrying coil having N truns and across sectional area A and current 1 flowing through it. how can polarity of magnetic field produced by it can be found using right hand thum rule?
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The magnetic field lines are concentric circles at every point of a current carrying circular loop. The direction of magnetic field of every section of the circular loop can be found by using the right hand thumb rule.
- At the centre of the circular loop, The magnetic field lines are straight.
- Each segment of circular loop carrying current produces magnetic field lines in the same direction with in the loop.
- The direction of magnetic field at the centre of circular coil is perpendicular to the place of the coil. i.e. along the axis of the coil.
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