Question

The direction of the magnetic field in a certain

region of space is determined by firing a test
charge into the region with its velocity in
various directions in different trials.The field direction is?

A. one of the direction of the velocity when
the magnetic field is zero.
B. None of these
C. the direction of the magnetic force.
D. perpendicular to the velocity when the
magnetic force is zero.
E. the direction of the velocity when the magnetic force is a maximum.

Answer 1

The direction of the magnetic field in a certain region of space is perpendicular to the velocity when the magnetic force is zero.

Step-by-step explanation:

The direction of the magnetic field in a certain region of space is determined by the direction of the magnetic force experienced by a moving charged particle. When a charged particle moves through a magnetic field, the magnetic force acting on the particle is perpendicular to both the velocity of the particle and the magnetic field itself, as determined by the right hand rule. Therefore, the direction of the magnetic field is perpendicular to the velocity when the magnetic force is zero.