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Two uniformaly charged nonconducting sph...

Two uniformaly charged nonconducting spheres, each of radius R,are fixed in a gravity free space as shwon in the figure. If an electron is released at rest from the point A, then its speed just before striking the other sphere is [mass of electron `=m_(e)`]

A

`sqrt((2Q_(e))/(9piepsilon_(0)m_(e)R))`

B

`sqrt((8Qe)/(9pi epsilon_(0)m_(e)R))`

C

`sqrt((16Qe)/(9pi epsilon_(0)m_(e)R))`

D

`sqrt((4Qe)/(9pi epsilon_(0)m_(e)R))`

Text Solution

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The correct Answer is:
B
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