Magnetism Induction BLANK MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 9) An electron moves with a speed of 3.0 x 104 m/s perpendicular to a uniform magnetic field of 0.40 MAGNETIC FORCE ON A MOVING CHARGE T. What is the magnitude of the magnetic force on the electron? (e = 1.60 x 10-19 C) 1) Which way does the magnetic field point at position A? A) 1.9 x 10-15 N B) 10) A charged particle of mass 0.0040 kg is subjected AN S C to a 4.0-T magnetic field which acts at a right angle to its motion. If the particle moves in a D A) B) circle of radius 0.10 m at a speed of 2.0 m/s, what D) is the magnitude of the charge on the particle? A) 0.020 C B) 2) What is the path of an electron moving perpendicular to a uniform magnetic field? A) 3) The force on an electric charge moving in a magnetic field is: SELECT ALL THAT APPLY. A) B) C) D) 4) A stationary positive charge, Q, is located in the magnetic field, B, which is directed toward the right. The direction of the magnetic force on Q is A) B) C) D) 5) Under which of the following conditions is the net magnetic force on a charged particle equal to zero? SELECT ALL THAT APPLY. A ) B ) C) D) E) 6) If a proton is released at the equator and falls toward Earth under the influence of gravity, the magnetic force on the proton will be toward the assuming the magnetic field is directed toward the north at this location A) B) C) D) E) 7) A proton and an electron are shot into a uniform electric field at the same velocity v. Which experiences the greater acceleration a? A) D) 8) An electron moves with a speed of 5.0 x 104 m/s perpendicular to a uniform magnetic field of magnitude 0.20 T. What is the magnitude of the magnetic force on the electron? (e = 1.60 x 10-19 C) A) 1.6 x 10-15 N B )