0.5 25 25 0.75 30 (all dimensions in cm) Figure 4. Magnetic circuit problem 3-15 a....

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0.5 25 25 0.75 30 (all dimensions in cm) Figure 4. Magnetic circuit problem 3-15 a. the flux density in the air gap of the right leg; b. the flux density in the center leg; c. the current needed in the coil. Answer: a. B₂ = 0.8T; b. B₂ = 1.0T; c. I = 11.94A. 3-15. In the magnetic circuit shown in Figure 4 the center leg has the same cross-sectional area as each of the outer legs. The coil has 400 turns. The permeability of iron may be assumed to be infinite. If the air gap flux density in the left leg is to be 1.2T, find: 0.5 25 25 0.75 30 (all dimensions in cm) Figure 4. Magnetic circuit problem 3-15 a. the flux density in the air gap of the right leg; b. the flux density in the center leg; c. the current needed in the coil. Answer: a. B₂ = 0.8T; b. B₂ = 1.0T; c. I = 11.94A. 3-15. In the magnetic circuit shown in Figure 4 the center leg has the same cross-sectional area as each of the outer legs. The coil has 400 turns. The permeability of iron may be assumed to be infinite. If the air gap flux density in the left leg is to be 1.2T, find: