Current and Drift Velocity (multiple choice)

[predentalgirl1]

[SOLVED] Current and Drift Velocity (multiple choice)

1. In a dental X-ray machine, the movement of accelerated electrons is east. The current associated with these electrons is in what direction: (a) east, (b) west, or (c) zero?









3. At first I thought it was B (west) because as the electrons(-ve charge) are moving east, it is equivalent to a +ve charge moving west, conventional current towards west. But then it seems as if the answer could be C (zero). Which answer is correct?

 

[rohanprabhu]

Accelerated electrons always constitute a current provided that majority of the acceleration contributes to the same direction, which in your case is east.

and yes.. the current is going west as u said..

 

[Moetasim]

I would say that the correct answer is C (zero). This is because the current is defined as the flow of charge, and in this scenario, the electrons are the charge carriers. Since they are moving east, they are not contributing to the current in the east direction, but rather in the opposite direction. Therefore, the current in this case would be considered zero. It is important to note that conventional current is defined as the flow of positive charge, so it may be misleading in this scenario.