Problem 5.1 A particle of charge q enters a region of uniform magnetic field B (pointing intoge). The field deflects the particle a distance d above the original line of flight, as shownin Fig. 5.8. Is the charge positive or negative? In terms of a, d, B and q, find the momentumof the particle.

Problem 5.1 A particle of charge q enters a region of uniform magnetic

1.	Problem 5.1 A particle of charge q enters a region of uniform magnetic field B (pointing intoge). The field deflects the particle a distance d above the original line of flight, as shownin Fig. 5.8. Is the charge positive or negative? In terms of a, d, B and q, find the momentumof the particle.
Answer» The direction of motion of the particle and the direction of the magnetic field are known. Therefore, we can find the direction of the magnetic force acting on a positive and negative charge using Lorent's law.

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Problem 5.1 A particle of charge q enters a region of uniform magnetic field B (pointing intoge). The field deflects the particle a distance d above the original line of flight, as shownin Fig. 5.8. Is the charge positive or negative? In terms of a, d, B and q, find the momentumof the particle.

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