A multilayer coil of 2000 turns of fine wire is 20 mm long and has a thickness
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A multilayer coil of 2000 turns of fine wire is 20 mm long and has a thickness 5 mm of winding. If the coil carries a current of 5 mA, the mmf generated is
(a) 10 A · t
(b) 500 A · t
(c) 2000 A · t
(d) None of the above
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