An X-ray tube operating at 50kV converts `1%` energy in the form of X-ray. If the amount of heat produced is 495 watt, then the number of electrons colliding with the target per second is

Options

A. `6.25xx10^(16)`
B. `4.15 xx10^(16)`
C. `3.2xx10^(16)`
D. `1.2xx10^(16)`

Answer

A

Explanation

`N=495/(50 KeV) =6.25 xx10^(16)`