PHYSICS
posted by DEWA .
coil having 1000 turns and a length of 3.14cm carries a current of 5A. calculate the magnetomotive force and the magnetizing force

If the "length" of the coil is its circumference, the coil radius is
a = 0.5 cm = 0.005 m
If you want the value of H at the center of the coil, it is
H = N*I/(2 a)
and B is muo times that.
N is the number of urns.
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