CUET · PHYSICS · PYQ PAPER 2025
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 (A), (B), (C) and (D)
- B (B), (C) and (D) only
- C (A), (B) and (D) only
- D (A), (B) and (C) only
Answer & Solution
Correct Answer
(A) (A), (B), (C) and (D)
Step-by-step Solution
Detailed explanation
(A), (B), (C) and (D) (A) The magnetic force on a charge \(q\) moving with velocity \(v\) in a magnetic field \(B\) is given by \(F=q(v \times B)\). If the charge is stationary \((v=0)\), the force is zero. (B) According to the Biot-Savart Law, a moving charge (which constitutes…
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