AP EAPCET 24-Aug-2021 Shift 2 Paper

Section: Physics

Question : 112 of 160

Marks: +1, -0

A toroid of n tums, mean radius R and cross-sectional radius a carries current I. It is placed on a horizontal table taken as xy-plane. Its magnetic moment m _______

is non-zero and points in the z-direction by symmetry
points along the axis of the toroid (m=mϕ)
is zero, otherwise there would be a field falling as
1
r3
at large distances outside the toroid
is pointing radially outwards

Validate

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