Question

Figure shows electric field lines in which an electric dipole $\vec{p}$ is placed as shown. Which of the following statements is correct?

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

Answer 1

Answer: (C)

The dipole will experience a force towards left

Answer 2

The spacing between electric lines of force increases from left to right. Therefore, $E$ on left is greater than $E$ on right. Force on $+q$ charge of dipole is smaller and to the right. Force on $-q$ charge of dipole is bigger and to the left. Hence the dipole will experience a force towards the left.