You are free to use your notes and book, but are not allowed the internet or oth

Question

You are free to use your notes and book, but are not allowed the internet or other people. You may access the internet to open your textbook D | Question 47 1 pts An electron travels undeflected in a path that is perpendicular to an electric feld of 8.3 x 10 v/m. It is also moving perpendicular to a magnetic field with a magnitude of 7.3 x 103 T. If the electric field is turned off, at what radius would the electron orbit? O 124 x 10*m 889 x 104 m O 9.85 x 104m O 1.06 x 10o m * Previous Next. Not saved Subm MacBook Pro 7

Explanation / Answer

Here electrostatic force was balanced by magnetic force

qE = qvB

E = vB

v = E/B = 8300/7.3E-3 = 1136986 m/s

now radius of circle r = mv/qB

= 9.1e-31*1136986/[1.6e-19*7.3e-3]

= 8.85*10^-4 m answer

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