(1) A charged particle is moving perpendicular to a magnetic field in a circle with a radius r. The magnitude of the magnetic field is increased. Compared with the radius of the circle for the first particle, is the radius of the circular path for the second particle (A) smaller. (B) larger. (C) equal in size. (D)It is impossible to determine. (2) A parallel-plate capacitor is charged and then is disconnected from the battery. By what factor does the stored energy change when the plate separation is then doubled? (A) It becomes four times larger. (B) It becomes two times larger. (C) It becomes one-half as large. (D) It becomes one-fourth large.

(1) A charged particle is moving perpendicular to a magnetic field in a circle with a radius r. The magnitude of the magnetic field is increased. Compared with the radius of the circle for the first particle, is the radius of the circular path for the second particle (A) smaller. (B) larger. (C) equal in size. (D)It is impossible to determine. (2) A parallel-plate capacitor is charged and then is disconnected from the battery. By what factor does the stored energy change when the plate separation is then doubled? (A) It becomes four times larger. (B) It becomes two times larger. (C) It becomes one-half as large. (D) It becomes one-fourth large.

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter19: Magnetism

Section: Chapter Questions

Problem 20P: A proton (charge +e, mass mp), a deuteron (charge +e, mass 2mp), and an alpha particle (charge +2e,...

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