Charges +q and –q are placed at points A and B, respectively; which are at a distance 2L apart. C is the midpoint between A and B. The work done in moving a charge +Q along the semicircle CRD is:
   
1. qQ4πε0L
2. qQ2πε0L
3. qQ6πε0L
4. -qQ6πε0L

Subtopic:  Electric Potential Energy |
 59%
From NCERT
AIPMT - 2007
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