An electron is moving with a speed of 3×10⁷ m/s in a magnetic field of 6×10⁻⁴ T perpendicular to its path. What will be the radius of the path? What will be the frequency and the energy in keV? Given: mass of electron = 9×10⁻³¹ kg, charge e = 1.6×10⁻¹⁹ C, lev = 1.6×10⁻¹⁹ J.
