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 + L2 + L3 + etc or 1 H + 2 H +5 H = 8 H
Parallel:
4.5.8 Capacitance, adding – series and parallel
Series:
Parallel: CTotal = C1 + C2 + C3
4.6.1 Reactance
XC = 1/2(Pi)(f)(C)
XL = 2(Pi)(f)(L)
4.6.4 ELI the ICE man
XC – 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