An electron moves in crossed electric and magneticfields on a spiral (helical) trajectory. What are the values of therespective magnetic and electric fields, so that the radius of ahelix is 10cm, and its a pitch (vertical height of one completehelix turn) is 1 cm. Hint: approximate the motion as a circularmotion is XY only due to magnetic field and motion in Z directiononly due to electric field.
An electron moves in crossed electric and magneticfields on a spiral (helical) trajectory. What are the values of therespective magnetic and electric fields, so that the radius of ahelix is 1 cm , its a pitch (vertical height of one complete helixturn) is 10 cm and initial kinetic energy of the electron was 3 keV(kilo electron-volts). Hint: approximate the motion as acircular motion is XY only due to magnetic field and motion in Zdirection only due to electric field.
