An electron at point A as shown in the figure has a speed w = 1.4 x 10° m/s. The distance between points A and B is given as l = 7 cm. (Mass and charge of the electron are me = 9.109 x 10 31 kg and qe = 1.602 x 10 ºC, respectively.) A) Find the magnitude of the magnetic field, in units of microtesla that will cause the electron to follow the semicircular path from A to B. B) Find the time, in units of nanoseconds required for the electron to move from A to B.

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Chapter30: Magnetic Fields And Forces
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An electron at point A as shown in the figure has a speed un = 1.4 x 10° m/s.
The distance between points A and B is given as l = 7cm.
(Mass and charge of the electron are me = 9.109 x 10 31 kg and
qe = 1.602 x 10 1ºC, respectively.)
A) Find the magnitude of the magnetic field, in units of microtesla that will cause the electron to follow the semicircular
path from A to B.
B) Find the time, in units of nanoseconds required for the electron to move from A to B.
Transcribed Image Text:An electron at point A as shown in the figure has a speed un = 1.4 x 10° m/s. The distance between points A and B is given as l = 7cm. (Mass and charge of the electron are me = 9.109 x 10 31 kg and qe = 1.602 x 10 1ºC, respectively.) A) Find the magnitude of the magnetic field, in units of microtesla that will cause the electron to follow the semicircular path from A to B. B) Find the time, in units of nanoseconds required for the electron to move from A to B.
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