# The direction of proton in a magnetic field

## Homework Statement

A positive charge is moving straight ahead in a magnetic field going out of page. What is the direction of force on the positively charged particle?

## The Attempt at a Solution

I know that you use the right hand rule where fingers show direction of force. But I'm confused because my fingers keep pointing up in one direction and then down in the other so I'm very confused.

So the magnetic force is $\vec{F} = q\vec{v}\times \vec{B}$