Question

A charge \( q \) is moving with a velocity \( v \) parallel to a magnetic field \( B \). Force on the charge due to magnetic field is

• A. \( qvB \)
• B. \( \frac{qB}{v} \)
• C. zero
• D. \( Bv/q \)

Hint:

The force on a moving charge in a magnetic field is given by \( F = qvB \sin \theta \).

Answer 1

The Correct Option is A

Step 1: Understanding the force.
The force acting on a charged particle moving in a magnetic field is given by the equation \( F = qvB \sin \theta \), where \( \theta \) is the angle between the velocity and magnetic field. For \( \theta = 90^\circ \), this simplifies to \( F = qvB \).

Step 2: Conclusion.
The force on the charge is \( qvB \).