Question

When the speed of electrons increases, then the value of its specific charge

• A. Increases
• B. Decreases
• C. Remains uncharged
• D. Increases upto some velocity and then begins to decrease

Answer 1

Answer: (B)

Decreases

Einstein showed by relativistic mass that the mass of electron increases with increases in speed and vice versa.

Specific charge $=\frac{e}{m}$ as mass increases specific charge decreases.