Obtain how many revolutions does the electron make

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An electron is shot into one end of a solenoid. As it enters the uniform magnetic field within the solenoid, its speed is 790 m/s and its velocity vector makes an angle of 30 degree with the central axis of the solenoid. The solenoid carries 4.2 Amp and has 8000 turns along its length. Find how many revolutions does the electron make along its helical path within the solenoid by the time it emerges from the solenoid's opposite end? (In a real solenoid, where the field is not uniform at the two ends, the number of revolutions would be slightly less than the answer here.)

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Reference no: EM13669757

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