Question

26.1 The figure shows a proton in a magnetic field. (1) For which of the three proton velocities shown will the magnetic force be greatest? (2) What will be the direction of the force in all three cases? (a) (b) (c) GOT IT?

Answer 1

The solution of the problem is given below.

Page No Date Solution of Problemy consider speed in each case be o Force on a charge persicle in a magnetic field is o inwards o (b) 4 velocity ... a aq (vix Bê) = quB (-k) ū a vcoso ł + usino ř F 2 q (varo i tusho)) x B î F 2 quB sind (k) in wards au Fe a qc vêx Bi) 20. ĒLET < Fat Boots a direction for @ & inwards using cross product ardone above - ® No force is acting on the perticle proton moving out of page then e aur Faq (u x B) a q vêx Bê ) Fa quß o along the yaxis upwards) For election moving up (along ty aky a F=a (TXB). F2-e (vgxB i) = evBk out words (6) (dh

Page No. >x Date Faqe x B) - ec- vị x B = e o B (-Ŕ) ) in wards tox positius Biz ? Faq (u x B Fk - q (uê x B) If one looks at the above expression the cross product of T x B is ontwords thew B & can be in ly plane .: We can't find spenfie direction of magretro field using given information hence we need additional information