Physics, asked by malak310512, 5 months ago

A cylindrical electromagnet is shown in Fig. 3-18. Given: a = 2 mm, c = 40 mm, I = 40 mm, N = 500
tums, and R = 3.5 12. A 110-V, 60-Hz source is applied across the coil. Atx= 5 mm, determine (a) the
maximum airgap flux density and (b) the average value of the electrical force. Assume 1 >> Ho.
Ans. (a) 0.65 T; (b) 106 N

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