# ch19-sol - Problem Solutions 19.2(a For a positively...

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Problem Solutions 19.2 (a) For a positively charged particle, the direction of the force is that predicted by the right hand rule. These are: (a’) in plane of page and to left (b’) into the page (c’) out of the page ( d ) in plane of page and tow ard the top (e’) (f’) (b) For a negatively charged particle, the direction of the force is exactly opposite what the right hand rule predicts for positive charges. Thus, the answers for part (b) are reversed from those given in part (a) . 19.3 (extra) Since the particle is positively charged, use the right hand rule. In this case, start with the fingers of the right hand in the direction of v G and the thumb pointing in the direction of F G . As you start closing the hand, the fingers point in the direction of after they have moved 90°. The results are (a) B G (b) tow ard the right (c) tow ard bottom of page 19.4 Hold the right hand with the fingers in the direction of v G so that as you close your hand, the fingers move toward the direction of B G . The thumb will point in the direction of the force (and hence the deflection) if the particle has a positive charge. The results are (a) tow ard top of page (b) , since the charge is negative.

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ch19-sol - Problem Solutions 19.2(a For a positively...

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