A ring having a cross-sectional area of 500 mm2, a circumference of 40 – McqOptions

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1.	A ring having a cross-sectional area of 500 mm2, a circumference of 400 mm and =800microWb has a coil of 200 turns wound around it. Relative permeability of ring is 380. Calculate the magnetomotive force.
A.	1442At
B.	1342At
C.	1432At
D.	1344At
Answer» E.

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