Which of the follwing characteristies of electrons determines the current in a conductor?

Options

A. Drift velocity alone
B. Thermal velocity alone
C. Both drift velocity and thermal velocity
D. Neither drift nor thermal velocity

Answer

A

Explanation

The relationship between current and drift speed is given by
`I = "ne"Av_(d)`
Here, I is the current and `v_(d)` is the drift velocity.
So, `I propto V_(d)`
Thus, only drift velocity determines the current a conductor.