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Asked by tina

a MAGNET CAN EXERT A FORCE ON A MOVING CHARGED PARTICLE, BUT IT CAN NOT CHANGE THE PARTICLE'S KINETIC ENERGY. WHY?
17 years ago

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Answered by drwls
The force that a magnetic field exerts on a charge is always perpendicular to the direction of motion. Work is only done by the force component along the direction of motion, and that component is always zero.
17 years ago

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