Modern Physics> In an experiment for measuring e/m, a cat...

In an experiment for measuring e/m, a cathode particle is passing through two deflecting plates maintained at voltage difference of 40V and separated by a distance of2cm.The cathode particle traveling at right angles to the field moves in a circularpath of radius 2m.Determine the KE of electron in eV.

Kevin Nash , 11 Years ago

Grade upto college level

1 Answers

Yash Jain

Last Activity: 11 Years ago

See, in this case, the electrostatic force is providing the necessary centripetal acceleration.
So, mv²/r = eE = eV/d
Therefore, KE = ½*mv² = ½*eVr/d
Rest you can do it on your own (Be careful with unit conversions).

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Modern Physics> In an experiment for measuring e/m, a cat...

Kevin Nash , 11 Years ago

Yash Jain

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