A single loop- circular coil of radius 8.5 cm produces a magnetic field at its c

Question

1. A single loop- circular coil of radius 8.5 cm produces a magnetic field at its center that just cancels the Earth magnetic field of magnitude 0.7 Gauss. Determine the current in the loop. 15 A 947 A 9.47 A 0.15 A

A single loop- circular coil of radius 8.5 cm produces a magnetic field at its center that just cancels the Earth magnetic field of magnitude 0.7 Gauss. Determine the current in the loop. 15 A 947 A 9.47 A 0.15 A A single loop- circular coil of radius 8.5 cm produces a magnetic field at its center that just cancels the Earth magnetic field of magnitude 0.7 Gauss. Determine the current in the loop. 15 A 947 A 9.47 A 0.15 A 15 A 947 A 9.47 A 0.15 A

Explanation / Answer

B = uI/2R = 4pi x 10^-7 * I / 2*.085

I = 9.47

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