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All Subjects
CSS
CSS MPT
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CSS Past Papers
Past Papers
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Departmental Past Papers
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Subject:
Physics
The electric P.E of an electron in an orbit at a distance rn from the positive charge_____________?
A.
Ke2/rn
B.
Ke2/rn2
C.
−Ke2/rn
D.
−Ke2/rn2
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