Figure 1.5 shows electric field lines in which an electric dipole p is placed as shown. Which of the following statements is correct?

F1 Savita Eng 12-7-24 D9

  1. The dipole will not experience any force.
  2. The dipole will experience a force towards right.
  3. The dipole will experience a force towards left.
  4. The dipole will experience a force upwards.

Answer (Detailed Solution Below)

Option 3 : The dipole will experience a force towards left.

Detailed Solution

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Explanation:
In the given figure, the electric field lines are not uniform.

→Electric field lines are stronger on the left side than on the right.

We know Force on a charged particle kept in an electric field is given as: 
\(\vec{F} = q \vec{E}\)

→Therefore the force on the negative charge due to Electric field E1 will be:

 \(\vec{F_1} = -q \vec{E_1}\)

→And the force on the positive charge due to Electric field E2 will be: 

\(\vec{F_2} = q \vec{E_2}\)

Since E1>E2 then F1>F2, and the net force on the dipole will be towards the left
Hence, the correct option is (3) 

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