A21-Lect-7+%5BCompatibility+Mode%5D

# A21-Lect-7+%5BCompatibility+Mode%5D - 1 26.6 Motion of a...

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Unformatted text preview: 1/29/2009 1 26.6 Motion of a Charged Particle in an Electric Field ¾ The previous section we focused on the source charges and the electric field created by these charges. ¾ This section we will focus on the other charges that enter the field and respond to the electric field. ¾ The fig below shows an electric field has been produced by a source charge. ¾ If a particle of charge q and mass m placed in the field. Then the electric field exerts a force on the charged particle q . Note: on negatively charged particle, the electric field and the force are opposite each other E q F q on r r = ¾ The response of the charge particle to this force is by moving with an acceleration, ¾ The ratio q /m is called the “ charge-to-mass ratio” which is important for the dynamics of charged particle motion in an electric field E m q m F a q on r r = = for the dynamics of charged particle motion in an electric field. ¾ How we deal with this ratio: ¡ Two charges for example a proton and a Na + ion , will experience equal forces if placed at the same point in an electric field....
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A21-Lect-7+%5BCompatibility+Mode%5D - 1 26.6 Motion of a...

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