52. The armature of a 60-Hz AC generator rotates in a magnetic field of 0.15 T. If the area of the coil is 2.0x10-2 m2, how many rings must the coil contain if the peak output is to be close to 150 V?
(A)6
(B)15
(C)60
(D)90
(E)130
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統計: A(0), B(2), C(0), D(0), E(7) #3091970
統計: A(0), B(2), C(0), D(0), E(7) #3091970