Qm assumeqmedandx0areknown whatisb b 2 m 2 ed x0 q v0

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Unformatted text preview: eleration Particle moves with uniform circular motion BB Calculation Calculation A particle of charge q and mass m is accelerated from rest by an electric field E through a distance d and enters and exits a region containing a constant magnetic field B at the points shown. q,m Assume q,m,E,d, and x0 are known. x0/2 exits here XXXXXXXXX X X X X X X X X X x0 XXXXXXXXX d XXXXXXXXX enters here B B What is B? • What is the radius of path of particle? R = x0 R = 2 x0 1 R = x0 2 mv R= 0 qB (A) (B) (C) (D) (E) • Why?? R xo/2 XXXXXXXXX XXXXXXXXX XXXXXXXXX XXXXXXXXX E 2 v0 R= a BB Calculation Calculation A particle of charge q and mass m is accelerated from rest by an electric field E through a distance d and enters and exits a region containing a constant magnetic field B at the points shown. q,m Assume q,m,E,d, and x0 are known. What is B? B= 2 m 2 Ed x0 q v0 = XXXXXXXXX X X X X X X X X X x0 XXXXXXXXX d XXXXXXXXX enters here B B 2qEd m B= E v exits here x0/2 B=E m 2qEd B= E 1 m 2 Ed x0 q B= mv0 qx0 (A) (B) (C) (D) (E) • Why?? r r F = ma v2 qvB = m R B= mv qR B= m2 q x0 B= 2 x0 2qEd m 2mEd q BB Follow­Up Follow­Up A particle of charge q and mass m is...
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This document was uploaded on 02/13/2014.

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