Référ to diagram 3. A vertical circular coil with 32 turns of radius 7.81 cm is free to rotate about a frictionless, horizontal axis through the center. Mass 6.77 kg hangs from the bottom of the coil; assume the coil's mass is negligible. The entire region is immersed in a uniform magnetic field of magnitude 0.695 T pointing downward. Now a switch is closed, and current 8 A flows in the coil. Find T, the magnitude of the net torque exerted on the loop just as the current begins, in N-m.
Référ to diagram 3. A vertical circular coil with 32 turns of radius 7.81 cm is free to rotate about a frictionless, horizontal axis through the center. Mass 6.77 kg hangs from the bottom of the coil; assume the coil's mass is negligible. The entire region is immersed in a uniform magnetic field of magnitude 0.695 T pointing downward. Now a switch is closed, and current 8 A flows in the coil. Find T, the magnitude of the net torque exerted on the loop just as the current begins, in N-m.
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