Posted by **DEWA** on Thursday, January 13, 2011 at 8:43am.

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

- PHYSICS -
**drwls**, Thursday, January 13, 2011 at 10:04am
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 mu-o times that.

N is the number of urns.

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