Chapter 3: Current Electricity
Ohm Law, Drift Velocity, and Kirchhoff Rules.
[Image of electrical circuit diagram with resistors]
Ohm's Law
The current (I) flowing through a conductor is directly proportional to the potential difference (V) across its ends, provided physical conditions remain constant.
V = IR
Drift Velocity (vd)
The average velocity with which free electrons get drifted towards the positive end of the conductor.
I = n A e vd
n = electron density, A = Area, e = charge