The intent of this website is to eventually contain comprehensive notes for all the topics which I’ve covered in Electrical Engineering. That is going from Circuits 1 through to later topics in Analog Filtering and Beyond.

My motivation is to have clear resources that I can use as a starting point for any students. Answer any questions that I’ve gotten multiple times.

Ohm’s Law

Ohm’s law relates voltage, current, and resistance:

$$ V = I,R $$

Where:

• $V$ is voltage in volts (V)
• $I$ is current in amperes (A)
• $R$ is resistance in ohms (Ω)

Solving for other variables:

$$ I = \frac{V}{R} \qquad\text{and}\qquad R = \frac{V}{I} $$

Example — a 9 V battery across a 3 Ω resistor:

$$ I = \frac{V}{R} = \frac{9\ \text{V}}{3\ \Omega} = 3\ \text{A} $$

Power relations (useful checks):

$$ P = VI = I^2 R = \frac{V^2}{R} $$