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Q.

4 charges are placed each at a distance ‘a’ from origin. The dipole moment of configuration is:

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a

$2 q a \hat{j}$

b

$3 q a \hat{j}$

c

$2 q a (\hat{i} + \hat{j})$

d

$q a \hat{j}$

answer is A.

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Detailed Solution

$P_{x} = \sum q_{i} x_{i} and P_{y} = \sum q_{i} y_{i}, \vec{P} = p_{x} \hat{i} + py \hat{j}$

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