Question

The angle between the dipole moment and electric field at any point on the equatorial plane is :

• A. $0^{\circ }$
• B. ${90}^{\circ }$
• C. ${180}^{\circ }$
• D. ${45}^{\circ }$

Answer 1

The correct option is C ${180}^{\circ }$

Dipole moment points in a direction from negative charge towards positive charge as shown in the figure. At equatorial plane, the electric field points in a direction just opposite to that of dipole moment. Hence the angle between dipole moment and electric field at any point on equatorial plane is ${180}^o$.