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The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength ?

/ Magnetism and Electromagnetism / By
The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength ?

A. 2500 AT/m
B. 250 AT/m
C. 25 AT/m
D. 2.5 AT/m