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Question

Figure shows electric field lines in which an electric dipole P is placed as shown.
Which of the following statements is correct?
941686_8fded3231e8143fcba29818c8ac63b6c.png

A
The dipole will not experience any force
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B
The dipole will experience a force towards right
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C
The dipole will experience a force towards left
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D
The dipole will experience a force upwards
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Solution

The correct option is C The dipole will experience a force towards left
The spacing between electric lines of force increases from left to right. It means that the electric field intensity E on left is greater than the electric field intensity E on right.
So, the force on +q charge of the dipole is smaller and to the right. Force on q charge of the dipole is bigger and to the left due to variable electric field. Hence the dipole will experience force towards the left.

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