21.6 The Torque on a Current Carrying Coil
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21.7 Magnetic Fields Produced by Currents, Part A
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The Back Spike From A Coil Can Destroy Switches, Relays And Electronic Parts.
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21.2 The Force That a Magnetic Field Exerts on a Moving Charge
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Torque acting on current loops | Moving charges & magnetism | Physics | Khan Academy
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21.3 The Motion of a Charged Particle in a Magnetic Field
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Magnetic Field of a Straight Current Carrying Wire
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An Engineering Fairy Tale: Cascade Failure at the Super Kamiokande
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