Choose a vector quantity from the following:

The correct answer is Option (3) → Electric dipole moment

A vector quantity has both magnitude and direction.

Option (1) Electric charge — Incorrect. Charge has only a magnitude and a sign; it is a scalar.

Option (2) Electric potential — Incorrect. Potential is work per unit charge, a scalar.

Option (3) Electric dipole moment — Correct. The electric dipole moment \( \vec{p} = q \times 2\vec{a} \) points from the negative charge to the positive charge, so it is a vector.

Option (4) Electric flux — Incorrect. Flux \( \Phi = \vec{E}\cdot\vec{A} \) is a dot product of two vectors, so it is a scalar.

NCERT (2026-27):
The Field of an Electric Dipole – “… The dipole moment vector p of an electric dipole is defined by

    \( \displaystyle \mathbf{p} = q \times 2a\,\hat{\mathbf{p}} \qquad (1.19) \)

that is, it is a vector whose magnitude is charge q times the separation 2a (between the pair of charges q, –q) and the direction is along the line from –q to q.”