>>1346927Right hand rule can be demonstrated and applied in numerous ways. I prefer the thumb=current, fingers=field, palm=force. Since there are many fingers, it fits the field lines nicer in the analogy.
The field around the applied current goes in the direction of your bent fingers. In the given setup the current comes down from the left and up from the right. Pointing your thumb in the appropriate directions, you see that the field goes into the paper on the outside and out on the inside, like the sketches in
>>1346931 >>1346932. Now, there's the current going through the projectile, heading to the right. Point your thumb to the right and your fingers out, and you'll see that your palm faces down. That's the force. The projectile goes down.
