Question 1 (7 marks) Figure 1 shows an electron being accelerated from rest in a region of an electric field created by an accelerating voltage, Vacc' Upon reaching the grid at the accelerating voltage, the electron passes through into a region of a constant magnetic field. The electron's motion changes to form an arc. 0.300 m region of magnetic field X X X X X X electron X X X 7 X X X X IX X X region of electric field electron passes out OV acc through a window Figure 1 The electron arrives at the accelerating voltage grid at a speed of 5.93 x 10 m s . The arc of the motion of the electron has a radius, r, of 1.50 cm. a. Determine the magnitude of the electric field strength provided by the accelerating 3 marks voltage. Show your working. Education Pty Lid b. Determine the magnitude of the force acting on the electron while it is in the region of the magnetic field. Show your working. 2 marks N C. Determine the magnitude of the magnetic field. Show your working. 2 marks T