Question

The diagram shows a positive charge moving in a magnetic

field.
in which direction is the magnetic force acting on the
charge?

Answer 1

Answer: Moving charges

Step-by-step explanation:

We can remember this diagram using the right-hand rule. If you point your pointer finger in the direction the positive charge is moving, and then your middle finger in the direction of the magnetic field, your thumb points in the direction of the magnetic force pushing on the moving charge.

Answer 2

The direction of the magnetic force acting on the charge is UP. (Option C).

How to determine the direction is the magnetic force?

The direction of the magnetic force acting on the charge is determined as follows.

The formula for the force on a moving charge in magnetic field is given as;

F = q (v × B)

From the diagram we can see that positive charge is moving towards left in magnetic field which is coming out of the plane.

The direction of the velocity and magnetic field is;

v = v(-i)

B = B(k)

We will solve for the direction of the magnetic force as;

F = q (v × B)

F = q (v(-i) × Bk)

F = qvBj

so the force is along +Y direction that is upwards.

The complete question is below:

The diagram shows a positive charge moving in a magnetic field.

In which direction is the magnetic force acting on the charge?

A. into the screen

B. out of the screen

C. up

D. down