Oscillating magnets in coupled coils
• D+15+1

Oscillating magnets in coupled coils. A cow magnet suspended by a spring is set to oscillate inside a 1000 turn coil. The coil is connected to an identical apparatus via a reversing switch. As the magnet goes in and out of Coil A, the resulting B-field in Coil B causes Magnet B to oscillate. By changing the reversing switch, the magnets now oscillate 180 degrees out of phase.

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