1. The problem statement, all variables and given/known data Two long parallel wires A and B. They are shown from a plane perpendicular to the wires. There is a point P with some distance "d". This creates an "L" shape if you play connect the dots and look down on the paper. 1)What is the magnetic force on wire B if only A carries a current? In this scenario the current in wire A is headed into the paper or away from me when looking down. Using the RHR this means my fingers are curled clockwise. 2)What is the magnetic force on proton P traveling to the right(in the direction of B) if only wire A is carrying a current. In this scenario the current in wire A is headed out of the paper or towards me when looking down. Using the RHR this means my fingers are curled counter-clockwise. 3. The attempt at a solution 1) I figured, from using the RHR, that the field at B from A points down, tangent to the circular magnetic field lines(again looking down at the paper). Since only wire A has current running through it and none through wire B that there shouldn't be any force exerted on wire B(at least i believe so). If there was current running through wire B then the force on B would either attract or repel from A depending on current direction. My answer is there is no force on B or zero force. 2)I have no clue how to work this(well i'm not confident if i do know) but if i were to try and give it a go, I would have to say that the force on the proton is going to point towards the direction the current flows which is out of the paper in this scenario. I figured i'd use the RHR yet again. Any help(if wrong) or a clearer understanding(if right) would be nice. Thanks.