Question

A beam of protons is deflected sideways. could this deflections be caused
a.) By an electric field
b) by a magnetic field
c.) if either could be responsible how would you be able to tell which was present

Answer 1

1. Yes
2. yes
3. on reversing the direction of projection of protons, if the protons are deflected in the same direction, then the deflection is due to electric field , if the protons are deflected in the opposite directions , then the deflection is due to magnetic field.