ATAR Notes: Forum

HSC Stuff => HSC Science Stuff => HSC Subjects + Help => HSC Physics => Topic started by: Jimbo123 on February 11, 2019, 07:51:41 pm

Title: Effects of a magnetic field on a cathode ray
Post by: Jimbo123 on February 11, 2019, 07:51:41 pm

Hi all,

Does anybody know the effect of the a magnetic field on a cathode ray is? I have attached a picture of the 'effect'

Title: Re: Effects of a magnetic field on a cathode ray
Post by: jamonwindeyer on February 11, 2019, 07:56:49 pm

Hello! The bending effect you see is due to the interaction between the moving electrons which make up the cathode ray, and the magnetic field. The moving electrons produce their own magnetic field, which interacts with the applied field to result in a force on the electron. This force acts perpendicular to the motion of the electrons, which causes their path to bend as you see in the image ;D