View Policies Current Attempt in Progress The maximum strength of the earth's magnetic field is about 6.9 x 10"5 T near the south magnetic pole. Suppose we want to utilize this field with a rotating coil to generate 88.3-Hz ac electricity. What is the minimum number of turns (area per turn = 0.017 m2) that the coil must have to produce an rms voltage of 150 V? Number i Units eTextbook and Media