Question

The electric field intensity \( E \), due to an electric dipole of moment \( p \), at a point on the equatorial line is

• A. parallel to the axis of the dipole and opposite to the direction of the dipole moment \( p \)
• B. perpendicular to the axis of the dipole and is directed away from it
• C. parallel to the dipole moment
• D. perpendicular to the axis of the dipole and is directed toward it

Hint:

For a dipole, the electric field at the equatorial line is directed opposite to the dipole moment.

Answer 1

The Correct Option is A

Step 1: Electric field of a dipole.
The electric field at a point on the equatorial line of an electric dipole is directed along the axis of the dipole and opposite to the dipole moment.

Step 2: Conclusion.
Thus, the correct answer is option (A).

Final Answer: \[ \boxed{\text{(A) parallel to the axis of the dipole and opposite to the direction of the dipole moment } p} \]