A plane sheet has a uniformly distributed charge. Origin is selected at the middle of the sheet ...

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A plane sheet has a uniformly distributed charge. Origin is selected at the middle of the sheet (in \( y z \) plane). A charge \( +Q \) is moved from point \( A(10 a, 2 a \),
\( 0) \) to point \( B(10 a, 0,2 a) \) along a circle and then to point \( C \) (10 a 0,0 ). If the initial electrostatic potential energy is \( U_{0} \), what will be final electrostatic potential energy?
(1) zero
(2) \( U_{0} \)
(3) \( U_{0} \sqrt{2} \)
(4) \( \frac{U_{0}}{2} \)
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