engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Moving Charges and Magnetism Motion in a Magnetic Field
An electron with energy 0.1 keV moves at right angle to the earth’s magnetic field of 1 × 10–4 Wbm–2. The frequency of revolution of the electron will be (Take mass of electron = 9.0 × 10–31 kg)
1
1.6 × 105 Hz
2
5.6 × 105 Hz
3
2.8 × 106 Hz
4
1.8 × 106 Hz