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2q and 3q are two charges separated by a...

2q and 3q are two charges separated by a distance 12 cm on x-axis. A third charge q is placed at 5 cm on y-axis as shown in figure. Find the change in potential energy of the system if 3q is moved from initial position to a point on X-axis in circular path:

A

`(q^(2))/(4pi epsilon_(0))`

B

`(6q^(2))/(4pi epsilon_(0)(91)) `

C

`(18q^(2))/(4pi epsilon_(0)(91))`

D

`(3q^(2))/(4pi epsilon_(0))`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaU=U_(f^(-))U_(i) and U=(1)/(4pi epsilon_(0))(q_(1)q_(2))/(r )`
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