Answer Happy

4 Region of Magnetic Field, B m 5. A charged particle q and mass m is accelerated from rest in the plane of the page through an electric field between two parallel plates. The particle then moves through a hole in the right-hand plate into a region of containing a uniform magnetic field B. The magnetic field is oriented perpendicular to the plane of the page. The particle curves in a semicircular path and strikes a detector. (GUESS method not required.) a) Draw the electric field between the plates? Answer: The electric field points to the left b) What is the sign of charge on the particle? Answer negative c) Which way does the magnetic field point? Answer into the page Region of Electric Field, E