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Charged Particles Moving in Simultaneous Electric and Magnetic Fields

Charged Particles Moving in Simultaneous Electric and Magnetic Fields. Mrs. Coyle AP Physics C. Charged Particles Moving in Electric and Magnetic Fields. Net force is the sum of the electric and magnetic force F = q E + q v x B.

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Charged Particles Moving in Simultaneous Electric and Magnetic Fields

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  1. Charged Particles Moving in Simultaneous Electric and Magnetic Fields Mrs. Coyle AP Physics C

  2. Charged Particles Moving in Electric and Magnetic Fields • Net force is the sum of the electric and magnetic force F = qE + qv x B

  3. Velocity Selector: an instrument that allows particles of a certain speed to move through. • It contains a uniform electric field that is perpendicular to a uniform magnetic field.

  4. Velocity Selector When net force=0 F = qE + qv x B =0 qE = qv x B v = E / B An entering particle of this speed will continue moving straight across the plates. If the particle has a different speed, then the magnetic force will be different and the net force will not be zero.

  5. Mass Spectrometer

  6. Thomson’s Experiment found the ratio of charge to mass of the electron

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