Question

The main equation we are using to measure the e/m ratio is:

e/m= 2V/r^2B^2

If the anode voltage V is increased by 4 times and the magnetic field was kept constant, the electron beam's deflection radius will be:_______

a. halved
b. no change
c. doubled
d. quadrupled

Answer 1

a.

Step-by-step explanation:

the electrons beams deflection radius will be halved.