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WB JEE 2018
MCQ (More than One Correct Answer)
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Two positive charges Q and 4Q are placed at points A and B respectively, where B is at a distance d units to the right of A. The total electric potential due to these charges is minimum at P on the line through A and B. What is (are) the distance (s) of P from A?
A
$${d \over 3}$$ units to the right of A
B
$${d \over 3}$$ units to the left of A
C
$${d \over 5}$$ units to the right of A
D
d units to the left of A
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