force on an electric charge moving in a magnetic field
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Force on an Electric Charge Moving in a Magnetic Field. F=qvB sin q. Right-Hand Rule Again. Important: right-hand rule defines direction of a force acting on a positive charge. For negatively charged particles the force is in exactly the opposite direction. - PowerPoint PPT PresentationTRANSCRIPT
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Force on an Electric Charge Moving in a Magnetic Field
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F=qvB sin
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Right-Hand Rule Again
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Important: right-hand rule defines direction of a force acting on a positive charge. For negatively charged particles the force is in exactly the opposite direction.
Don’t forget this when you are solving problems about electrons!!!
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Electron’s Path in a Uniform Magnetic Field
An electron travels at velocity v in a plane perpendicular to a magnetic field. Describe its path.
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Conceptual Example: A Spiral Path
What is the path of a charged particle if its velocity is not perpendicular to the magnetic field?
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Magnetic Field Due to a Straight Wire
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AmT
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IB
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Force between Two Parallel Wires
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Each current produces magnetic field that is “felt” by the other wire so that each must exert a force on the other.
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Parallel current in the same directions attract each other, antiparallel currents repel.