Pure Equations

Question 1

What is the equation for drift velocity? What do each of the variables in the equation mean and its units?

Answer 1

I = vAnq

Where:

I = current (amps, A)

v = drift velocity (m/s)

A = cross-sectional area of the conductor (m2)

n = charge density (m-3) This is the number of charge carriers that can move per m3

q = charge on each charge carrier (coulombs, c)

Question 2

Voltage, energy transferred, charge passing

anuj idiot

Answer 2

Energy transferred (J)
--------------------------------(divided by)
Charge passing (C)

(V=J/Q)