Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
20

20-3: Force on Electric Current in Magnetic Field
20-4: Force on Charge Moving in Magnetic Field
20-5 and 20-6: Magnetic Field of Straight Wire, Force between Two Wires
20-7: Solenoids and Electromagnets
20-8: Ampère's Law
20-9 and 20-10: Torque on Curent Loop, Motors, Galvanometers
20-11: Mass Spectrometer
20-12: Ferromagnetism, Hysteresis

Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 20
Q

A proton (mass  mp)(\textrm{mass} \; m_p), a deuteron (m=2mp,  Q=e)(m = 2m_p, \; Q = e), and an alpha particle (m=4mp,  Q=2e)(m = 4m_p, \; Q = 2e) are accelerated by the same potential difference VV and then enter a uniform magnetic field B\vec{B}, where they move in circular paths perpendicular to B\vec{B}. Determine the radius of the paths for the deuteron and alpha particle in terms of that for the proton.

A
rd=2rp,rα=2rpr_d = \sqrt{2}r_p, r_\alpha = \sqrt{2}r_p
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