Target Exam

CUET

Subject

Physics

Chapter

Electric Charges and Fields

Question:

For a short electric dipole, identify the incorrect statement(s).

(A) The electric field intensity varies inversely with the cube of the distance from the center of the dipole.
(B) The electric field is directed from negative to positive charge.
(C) The electric potential at mid-point of the dipole is zero.
(D) The electric field intensity at mid-point of the dipole is zero.

Choose the correct answer from the option given below:

Options:

(A) and (C) only

(B) and (D) only

(A) only

(B) only

Correct Answer:

(B) and (D) only

Explanation:

The correct answer is Option (2) → (B) and (D) only

Explanation:

(A) True — For a short dipole, electric field intensity varies as $E \propto \frac{1}{r^3}$.

(B) False — The electric field is directed from the positive charge to the negative charge.

(C) True — The electric potential at the mid-point (equatorial line) is zero.

(D) False — The electric field intensity at the mid-point is not zero; it is directed from positive to negative charge along the axis joining the charges.