Physics 30S Final Exam Review-2.pdf

Physics 40S RRSD Final Exam – June 2005 Page 1611. A magnetic field, of 1.8 T, runs directly into this page. An electron runs from4the bottom of the page towards the top at a speed of 2.5× 10 m/s. What is themagnitude and direction of the force the electron experiences as it enters themagnetic field? [3]Long Answer – Electricity & E-M Induction (12)12. Calculate the missing quantities. [4]13. What is the velocity of an alpha particle moving in a circular path of radius 10.0cm in a plan perpendicular to a 1.7 T magnetic field? [2]14. A charge of 4.70× 10 −8 C is placed in an electric field of intensity43.95× 10 N/C. What is the magnitude of the electric force on the charge? [2]