An electron is accelerated from rest by a potential difference
of 120 V. It then enters a uniform magnetic field of magnitude 200
mT with its velocity perpendicular to the field. Calculate the
number of revolutions completed by the electron in 2 minutes. (Mass
of electron is me = 9.1 x 10-31 kg and
magnitude of its charge is e = 1.6 x 10-19 C).
An electron is accelerated from rest by a potential difference of 120 V. It then enters a uniform magnetic field of magn
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An electron is accelerated from rest by a potential difference of 120 V. It then enters a uniform magnetic field of magn
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