A circular coil of radius R and N turns has negligible resistance and hangs vertically. Its ends are connected through a switch to a charged capacitor Q. The coil lies in a horizontal uniform magnetic field B₀ parallel to its plane. When the switch is closed, the capacitor discharges through the coil in a very short time. The angular momentum gained by the coil is:
Physics · Electromagnetic Induction
A circular coil of radius R and N turns has negligible resistance and hangs vertically. Its ends are connected through a switch to a charged capacitor Q. The coil lies in a horizontal uniform magnetic field B₀ parallel to its plane. When the switch is closed, the capacitor discharges through the coil in a very short time. The angular momentum gained by the coil is:
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