For a circular coil of radius R and N turns carrying current

Last updated: 6/5/2023

For a circular coil of radius R and N turns carrying current I the magnitude of the magnetic field at a point on its axis at a distance x from its centre is given by B HIR 2N 3 2 2 x R a Show that this reduces to the familiar result for field at the centre of the coil b Consider two parallel co axial circular coils of equal radius R and number of turns N carrying equal currents in the same direction and separated by a distance R Show that the field on the axis around the mid point between the coils is uniform over a distance that is small as compared to R and is given by B 0 72 approximately HONI R