68 A toroid of n turns mean radius R and cross sectional

Last updated: 6/8/2023

68 A toroid of n turns mean radius R and cross sectional radius a carries current I It is placed on a horizontal table taken as XY plane Its magnetic NCERT Exemplar moment m a is non zero and points in the Z direction by symmetry b points along the axis of the toroid m m c is zero otherwise there would be a field falling as large distances outside the toroid d is pointing radially outwards 1 3 r at