A magnetic circuit has 150 turns-coil, the cross-sectional area 5 × 1 – McqOptions

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1.	A magnetic circuit has 150 turns-coil, the cross-sectional area 5 × 10-4 m2 and the length of the magnetic circuit 25 × 10-2 m. What are the values of magnetic field intensity and relative permeability when the current is 2 A and total flux is 0.3 × 10-3 Wb?
A.	1200 AT/m and 397.9
B.	300 AT/m and 500 × 10-6
C.	300 AT/m and 397.9
D.	1200 AT/m and 500 × 10-6
Answer» B. 300 AT/m and 500 × 10-6

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