In the J.J. Thomson method for the determination of e/m, what is the angle between the magnetic and electric fields to which the electrons are subjected ?

Question

In the J.J. Thomson method for the determination of e/m, what is the angle between the magnetic and electric fields to which the electrons are subjected ? (A) 0 (B) 45 (C) 90 (D) 80

Tardigrade Admin · Accepted Answer

Electric force should be opposite to the magnetic force. This is possible when the angle between E and B is 90.

Q. In the J.J. Thomson method for the determination of e/m, what is the angle between the magnetic and electric fields to which the electrons are subjected ?

0

45

90

80

Electric force should be opposite to the magnetic force. This is possible when the angle between $E$ and $B$ is 90.