A positive charge moves horizontally to the right across this page and enters a magnetic field directed vertically downward in the plane of the page.
(a) What is the direction of the magnetic force on the charge: (1) into the page, (2) out of the page, (3) downward in the plane of the page, or (4) upward in the plane of the page? Explain.
(b) If the charge is 0.25 C, its speed is 2.0 x 102 m/s, and it is acted on by a force of 20 N, what is the magnetic field strength?

  • CreatedAugust 29, 2015
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