College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 19 - Problems - Page 753: 23


Particle 1 has a negative charge. Particle 2 has a positive charge.

Work Step by Step

$F = q~v\times B$ By the right hand rule, a particle would move clockwise if it had a positive charge, and a particle would move counter-clockwise if it had a negative charge. Since particle 1 is moving counter-clockwise, it must have a negative charge. Since particle 2 is moving clockwise, it must have a positive charge.
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