In the e/m experiment, a Uniform magnetic field is generated by Helmholtz coils with a radius of 0.158 m and N = 130 turns. [br]The coils are parallel to the plane of the figure. [br]The electron gun is located at the bottom. [br]The electron trajectory is shown with a green line. [br]The current in the Helmholtz coils is I and can be varied with the slider. [br]The accelerating voltage of the electron gun is V and can also be varied with the slider. [br]Instructions: [br]a) Determine the physical variable that will remain constant and select its value. [br]b) Select the value of the other physical variable according to your table and measure the radius of the trajectory using the grid on the graph. [br]Theoretical value for e/m is 1.759 × 10¹¹ C/kg[br]Note: The scale of the graph is in meters.