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

A21-Lect-7+%5BCompatibility+Mode%5D - 1/29/2009 1 26.6...

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Unformatted text preview: 1/29/2009 1 26.6 Motion of a Charged Particle in an Electric Field The previous section we focused on the source charges and the electric field created by these charges. This section we will focus on the other charges that enter the field and respond to the electric field. The fig below shows an electric field has been produced by a source charge. 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 = The response of the charge particle to this force is by moving with an acceleration, 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. 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 - 1/29/2009 1 26.6...

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