In the figure, two concentric circular loops of wire carrying current in the same direction lie in the same plane. Loop 1 has radius 1.50 cm and carries 4.20 mA. Loop 2 has radius 2.20 cm and carries 6.30 mA. Loop 2 is to be rotated about a diameter while the net magnetic field B⃗ set up by the two loops at their common center is measured. Through what angle must loop 2 be rotated so that the magnitude of the net field is 102 nT? Number Units
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In the figure, two concentric circular loops of wire carrying current in the same direction lie in the same plane. Loop 1 has radius 1.50 cm and carries 4.20 mA. Loop 2 has radius 2.20 cm and carries 6.30 mA. Loop 2 is to be rotated about a diameter while the net magnetic field B⃗ set up by the two loops at their common center is measured. Through what angle must loop 2 be rotated so that the magnitude of the net field is 102 nT? Number Units
