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


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

into the screen
out of the screen
up
down

The diagram shows a positive charge moving in a magnetic field In which direction is the magnetic force acting on the charge into the screen out of the screen u class=

Respuesta :

By the right hand rule the magnetic force on the charge acts up

Answer:

Direction of force = Upwards

Explanation:

As we know that force on a moving charge in magnetic field is given by

[tex]\vec F = q(\vec v \times \vec B)[/tex]

now here we can see that positive charge is moving towards left in magnetic field which is coming out of the plane

so here

[tex]\vec v = v(-\hat i)[/tex]

[tex]\vec B = B\hat k[/tex]

now by solving the equation we have

[tex]\vec F = q(v(-\hat i) \times B\hat k)[/tex]

[tex]\vec F = qvB \hat j[/tex]

so the force is along +Y direction that is upwards