to the right shows the trajectory o f a proton (m p = 1.67 times 10^- 2r \'k g.

Question

to the right shows the trajectory o f a proton (m p = 1.67 times 10^- 2r 'k g. qp = 1.602 times 10^-19C) in a magnetic field. Suppose the field is o f strength o f the maximum field o f a traditional superconducting magnet B = 15T. The proton travels at a speed o f 1 times 10 compute the radius and the direction o f the orbit. 3 x 10^-5m counter-clockwise 3 x 10^-5m, clockwise 2 x 10^-4m, counter-clockwise 2 x 10^-4m, clockwise 6 x 10^-4m counter-clockwise 6 x 10^-4m, clockwise 7 x 10^-3m counter-clockwise 7 x 10^-3m, clockwise Multip le -C ho ice Homework Problem 10.8 The figure below shows a current-carrying wire in a uniform magnetic field. The magnetic field is directed into the page. The current direction is as drawn. Select the vector drawn in the box to the right o f the figure that points in the direction o f the magnetic force on the wire. Multip le -C ho ice Homework Problem 10.9 You draw a coordinate system with + x pointing to the right o f the page and +z pointing into the page. In what direction is +y?

Explanation / Answer

(1) In this question magnetic field is providing the centripetal force to the particle

Fb = Fc

qVB = mV2 /R

R = mV/qB

R = (1.67 x 10-27)(1 x 107) / (1.6 x 10-19)15

R = 6.95 x 10-3 m

Force is directed towards the center

magnetic field is out of the page

We can use right hand palm rule and use for any point on the circle

So it would be clockwise

Option f is correct

(2) We can again use right hand palm rule

and we find that option 2 is correct

(3) Out of the page

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