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Question

Two particles A and B, having opposite charges 2.0×106C and 2.0×106C, are placed at a separation of 1.0cm. Calculate the electric field at a point on th axis of the dipole 1.0cm away from the centre.

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Solution

The value of the dipole moment is :
p=q×d
p=2×106×0.01
=2×108

We know, Electric field at an axial point of the dipole
=2Kpr3

=2×9×109×2×108(1×102)3

=36×107N/C.

1565148_1720393_ans_70eb72889bea4f16b91c479353813d50.png

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