(a) Find the magnitude and direction of the magnetic field that will cause the e

Question

(a) Find the magnitude and direction of the magnetic field that will cause the electron to follow the semicircular path from A to B.
T

to the leftto the right     upwarddownwardinto the pageout of the page

(b) Find the time required for the electron to move from A to B.
s

An electron at point A in the figure below has a speed v0 of 3.28 (a) Find the magnitude and direction of the magnetic field that will cause the electron to follow the semicircular path from A to B. T to the leftto the right upwarddownwardinto the pageout of the page (b) Find the time required for the electron to move from A to B. s x 10^6 m/s

Explanation / Answer

Here.

a)

as r = mv/Bq

0.10 = 9.1 *10^-31 * 3.28 *10^6/(B*1.602 *10^-19)

solving for B

B = 1.86 *10^-5 T

and F = q * V X B

then the field is INTO the page

b)

Time = distance/speed

t = pi*0.10/3.28 *10^6

t = 9.57 *10^-8 s

the time required is 9.57 *10^-8 s

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