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An electron moves in crossed electric and magnetic fields on a spiral (helical) trajectory. What are...

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Physics

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.

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