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An electric dipole is formed by two charges +q and – q located in xy - plane at (0,2) mm and (0, – 2) mm, respectively, as shown in the figure. The electric potential at point P (100, 100) mm due to the dipole is V 0 . The charges +q and – q are then moved t o the points ( – 1, 2) mm and (1, – 2) mm, respectively. What is the value of electric potential at P due to the new dipole?

1. V 0 /4
2. V 0 / 2
3. V 0 / 2
4. 3V 0 /4

Correct answer: V 0 / 2

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