In the figure, 11 = 12 = 5/2 A. Determine the magnitude of 13 if the resultant magnetic field at O is zero. у. 11 Ø 13 2 m 2 m 12 O 13 = 5V2 A O 13 = 5 A 13 = 10V2 A 13 = 10 A 13 = 20 A O 13 = 20V2 A
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