A proton,moving north,enters a magnetic field.Because of this field,the proton curves downward.We may conclude that the $\vec { B }$ field must have a component

Question

Quizplus · Accepted Answer

The direction of the magnetic force on a moving charge is given by the right-hand rule, which states that if you point the fingers of your right hand in the direction of the velocity of the positive charge (north, in this case) and curl them towards the direction of the magnetic field, your thumb will point in the direction of the force. Since the proton curves downward, the magnetic field must be towards the east for the right-hand rule to result in a downward force.

A Proton,moving North,enters a Magnetic Field B⃗\vec { B }B Field Must Have a Component A)downward

A Proton,moving North,enters a Magnetic Field $\vec { B }$ Field Must Have a Component
A)downward