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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2005
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Two charges q1 and q2 are placed 30 cm apart, as shown in the figure. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is q34πϵ0k , where k is –



image
( A ) 6q2
( B ) 8q2
( C ) 6q1
( D ) 8q1
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