5. The electric and magnetic fields can be used together to perform measurements of the properties of charged particles. We explore this relationship here. An electron is traveling 4.1 x 105 m/s in a region of space with uniform magnetic field perpendicular to its velocity. It experiences a magnetic force of 2.0 x 10-15 N. B V e- I a. What is the magnitude in Tesla (as a positive number) of the magnetic field? b. You want to balance the magnetic-field force on the electron with an electric force. What electric field direction do you need to get an electric force opposite the direction of the magnetic force? C. You want to balance the magnetic-field force on the electron with an electric force. What electric field magnitude in N/C do you need to do this? d. What will be the path of the electron if this electric field is applied? e. What will be the path of the electron if this electric field is not applied? Remember that if the direction of the electron's velocity changes while the magnetic field stays in the same direction, the magnetic force will change direction.