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An electric charge 10 –6 μ C is placed at origin (0, 0) m of X – Y co-ordinate system. Two points P and Q are situated at ( ) m 3 , 3 and ( ) m 0 , 6 respectively. The potential difference between the points P and Q will be :

1. 6 V
2. 0 V
3. 3 V
4. 3 V

Correct answer: 0 V

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