Instantaneous (AC)

Voltage

Voltage

Peak Velocity times Sine 2 pie Frequency Time

(V = V₀ × Sin 2πƒt)

(V = V₀ × Sin 2πƒt)

Current RMS

Voltage divided by Resistance

(I = V÷R)

(I = V÷R)

Voltage RMS

.707 Peak Voltage

(V = V₀÷√2)

(V ≈ .707×V₀)

(V = V₀÷√2)

(V ≈ .707×V₀)

Average Power in an AC circuit

Voltage squarred divided by Resitance

(P = V²÷R)

(P = I²×R)

(P = V²÷R)

(P = I²×R)

Capacitive Reactance

1 divided by 2 pie frequency capacitance

(Xc = 1 ÷ 2πƒC)

(Xc = 1 ÷ 2πƒC)

Inductive Reactance

2 pie frequency L

(XL = 2πƒL)

(XL = 2πƒL)

Ohm's law Resistor

Velocity divided by Current

(R = V÷I)

(R = V÷I)

Ohm's law Capacitor

Voltage divided by Current

(Xc = V÷I)

(Xc = V÷I)

Ohm's law Inductor

Voltage divided by Current

(XL = V÷I)

(XL = V÷I)

Ohm's law Generalized to AC circuits

Ohm's law Generalized to AC circuits

Impedance for a series RLC circuit

Square Root of paranthesis Restitance squared + paranthesis Inductive Reactance - Capacitive Reactance end paranthesis squared

(Z=√(R²+ (XL-Xc)²)

(Z=√(R²+ (XL-Xc)²)

Phase angle between voltage and current in a series RLC circuit

Tangent Theta = Inductive Reactance - Capacitive Reactance divided by Resistance

Power factor for an RLC circuit

Cosine Theta = Resitance divided by Impedance

Average power in terms of power factor

Current RMS Voltage RMS Cosine Theta

Resonance frequency of a series RLC circuit

1 over 2 pie Square Root L Current