Correct option is D
In a parallel magnetic circuit, similar to an electrical parallel circuit, the total magnetomotive force (MMF) or ampere-turns required to produce the total magnetic flux is the
sum of the ampere-turns of each path. Each parallel branch carries a portion of the total flux, and the MMF across each branch is the same, but the individual fluxes add up.
Thus, the correct total ampere-turn in a parallel magnetic circuit is the sum of the ampere-turns of each path.
Therefore, the correct answer is (d) Sum of ampere-turn of each path.
