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Question

What is the angle between the electric dipole moment and the electric field strength due to it on the equatorial line?

A
0o
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B
90o
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C
180o
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D
none of these
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Solution

The correct option is C 180o
Step 1: Angle between Electric field and Dipole [Refer Fig.]
At a point P on equatorial line

ER is net electric field due to dipole at point P as shown in the figure, directed Leftwards.

The direction of dipole vector P is from q to +q charge, i.e. Rightwards.

Therefore, The angle between electric dipole moment and electric filed on the equitorial line is 180
Hence option (C) correct

2114281_1061648_ans_a2d117d2a2444ff6b0695c169b0e61e4.png

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