Determine the initial direction of the deflection of charged particles as they e

Question

Determine the initial direction of the deflection of charged particles as they enter the magnetic fields shown in the figure below.

Figure (a)  up, down, to the right, to the left, into the page, out of the page, no deflection. Figure (b)  up, down, to the right, to the left, into the page, out of the page, no deflection. Figure (c)  up, down, to the right, to the left, into the page, out of the page, no deflection. Figure (d)  up, down, to the right, to the left, into the page, out of the page, no deflection.

Explanation / Answer

F =q(vxB)

(a) F direction is (ix-k) = j

F direction is up ward

(b) F direction is (-ix-j) =k

F direction is out to the page

(c) F direction is (-ixi) =0

no deflection

(d) F direction is ix ( icos(45)+jsin(45) = k sin(45)

F direction is along k sin(45)

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