A positive charge is moving towards south in a space where magnetic field is pointing in the north direction. The moving charge will experience:

The magnetic force experienced by a moving charge in a magnetic field is determined by the Lorentz force equation: F = q(v × B), where q is the charge, v is the velocity vector, and B is the magnetic field vector. The magnitude of this force is given by F = qvB sin(θ), where θ is the angle between the direction of motion and the magnetic field.

• In this case, the charge is moving towards the south.
• The magnetic field is pointing towards the north.
• Since north and south are diametrically opposite directions, the angle (θ) between the velocity and the magnetic field is 180 degrees.
• Mathematically, sin(180°) = 0.

As the sine of the angle is zero, the magnetic force becomes zero (F = 0). Consequently, the charge continues its motion without any deviation, experiencing no deflecting force.