Identify the correct statements:

(A) A magnetic field exerts force on a moving charge and not on a stationary charge.
(B) A moving charge produces a magnetic field.
(C) The magnetic field at a point on the axis of a current element is zero.
(D) Magnetic field $\vec B$ is tangential to a magnetic field line.

Choose the correct answer from the options given below:

(A), (B) (C) and (D)

The correct answer is Option (1) → (A), (B) (C) and (D)

(A) ✔ A magnetic field exerts force only on a moving charge, not on a stationary charge: $\vec{F} = q (\vec{v} \times \vec{B})$.

(B) ✔ A moving charge produces a magnetic field (Biot–Savart law).

(C) ✔ For an idealized infinitesimal current element (short straight wire segment), the magnetic field along its **axis** is zero. This is a direct consequence of the Biot–Savart law.

(D) ✔ Magnetic field vector $\vec{B}$ is tangential to the magnetic field line at any point.

Correct statements: (A), (B), (C), (D)