31.19 A certain solenoid (50 cm long with 2000 loops) carries a current of 0.70 A and is in vacuum. An electron is shot at an angle of 10° to the solenoid axis from a point on the axis. (a) What must be the speed of the electron if it is to just miss hitting the inside of the 1.6 cm diameter solenoid? (b) What is then the pitch of the electron's helical path? Ans. (a) 1.4 × 10’ m/s; (b) 14 cm
31.19 A certain solenoid (50 cm long with 2000 loops) carries a current of 0.70 A and is in vacuum. An electron is shot at an angle of 10° to the solenoid axis from a point on the axis. (a) What must be the speed of the electron if it is to just miss hitting the inside of the 1.6 cm diameter solenoid? (b) What is then the pitch of the electron's helical path? Ans. (a) 1.4 × 10’ m/s; (b) 14 cm
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Transcribed Image Text:31.19 A certain solenoid (50 cm long with 2000 loops) carries a current of 0.70 A and is in vacuum. An electron is
shot at an angle of 10° to the solenoid axis from a point on the axis. (a) What must be the speed of the
electron if it is to just miss hitting the inside of the 1.6 cm diameter solenoid? (b) What is then the pitch of the
electron's helical path?
Ans. (a) 1.4 x 10' m/s; (b) 14 cm
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