Answer to Question #210994 in Electricity and Magnetism for Nabeel khan

Question

A proton beam is moving vertically downward. It passes through a magnetic field directed horizontally from south to north. The beam is directed toward:

1- east 2- west 3- north 4- south

Answer 1

Proton will represent the direction of current. So, the direction of current is vertically downward. According to Fleming's left hand rule, if middle finger represents the direction of current and fore-finger represents the direction of magnetic field then thumb will represent the direction of Lorentz force acting on the proton which deflects the proton in east direction.

Hence,

option (1) is correct.

East direction