Section 1

3.3.1 Series and ground

3.3.2 Parallel

3.5.2 Newton’s Cradle

3.6.2 Lines of flux

4.2.4 Adding resistance: series, parallel, parallel rearranged

Series: RTotal = R1 + R2 + R3 = 3 Ω + 4 Ω  + 5 Ω  = 12 Ω

Parallel:

Parallel rearranged:

4.3.1 Ohms Law circle of doom

4.3.3 Ohm’s Law equations DC

E = I * R

I = E / R

R = E / I

4.3.3 Ohm’s Law equations AC

E = I * Z

I = E / Z

Z = E / I

4.4.1.1 Running Suicides

4.4.1.2 Sine wave from running back and forth

4.4.1.3 Sine wave as a cirlcle

4.5.3 Expanding and contracting field

4.5.5 Inductance, adding – series and parallel

Series: L1 + L+ L3 + etc or 1 H + 2 H +5 H = 8 H

Parallel:

4.5.8 Capacitance, adding – series and parallel

Series:

Parallel: CTotal = C1 + C+ C3

4.6.1 Reactance

XC = 1/2(Pi)(f)(C)
XL = 2(Pi)(f)(L)

4.6.4 ELI the ICE man

X– ICE – Current leads voltage. Leading. 
XL – ELI – Current lags voltage. Lagging.

4.7.2 Kirchhoff’s Current Law: The sum of currents at a node equals zero.

4.7.3 Kirchhoff’s Voltage Law: The sum of voltages in a closed loop equals zero.

5.2.3 Power Triangle

5.3.3 Units cancel out

5.3.4 Power Equations

P = I * E = Power equals Current times Voltage (original) 

P = E² / R = Power equals Voltage squared divided by Resistance

P = I² * R = Power equals Current squared times Resistance

5.3.5 Real Life Equation Usage

P = I * V  – A control room operator verifies a metered value 

P = I² * R – ‘I squared R loss’ or ‘Copper loss,’ this equation accounts for losses.

P = E² / R or P = V₁ * V₂ / Z – Calculates power flow through a transmission line