Use: μ= 4π x 10-7 Hm-¹, electron charge = -1.6x10-1⁹ C Question A narrow beam of electrons was directed at a speed of 2.9 x 107 m s´¹ into a uniform magnetic field. The beam followed a circular path of radius 35 mm. a) Calculate the flux density of the magnetic field (mass of an electron = 9.1 x 10-³1 kg) b) If the speed of the electrons in the beam was halved, what effect would this have on the radius of curvature of the beam in the field? Justify your answer.

Use: μ= 4π x 10-7 Hm-¹, electron charge = -1.6x10-1⁹ C Question A narrow beam of electrons was directed at a speed of 2.9 x 107 m s´¹ into a uniform magnetic field. The beam followed a circular path of radius 35 mm. a) Calculate the flux density of the magnetic field (mass of an electron = 9.1 x 10-³1 kg) b) If the speed of the electrons in the beam was halved, what effect would this have on the radius of curvature of the beam in the field? Justify your answer.