Temi invents a device that only allows particles of a certain velocity to pass through, which he calls a velocity selector . He creates an electric field and a magnetic field that is perpendicular to each other and ensures that the force of the electric field is equal to the force of the magnetic field. The diagram shows a charged particle moving through Temi's invention. [6 A, 4C]

a) Using your knowledge of electric and magnetic fields explain how Temi's velocity selector works.

b) Temi sets up his device so that the electric field is 450 N/ C and the magnetic field is 0.10 T. What is the speed of the particles that are allowed through?

c) Temi sends a proton through his device. What is the radius of the path the proton takes to get to point P?

5. Temi invents a device that only allows particles of a certain velocity to pass through. which he calls a velocity selector. He creates an electric field and a magnetic field that is perpendicular to each other and ensures that the force of the electric field is equal to the force of the magnetic field. The diagram shows a charged particle moving through Temi's invention. [6 A, 4C] g a) Using your knowledge of electric and magnetic fields explain how - Temi's velocity selector works. b) Temi sets up his device so that the electric field is 450 N/C and the magnetic field 1s 0.10 T. What 1s the speed of the particles that are allowed through? ) Temi sends a proton through his device. What is the radius of the path the proton takes to get to point P? velocity selector