OpenStax University Physics/E&M

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Each link below leads two different variations of equation sheets used in the electromagnetism unit OpenStax University Physics (Volume 2 Unit 2).

Chapter 5[edit]

8.85×10−12 F/m = vacuum permittivity.

e = 1.602×10−19C: negative (positive) charge for electrons (protons)

= 8.99×109 m/F

where

where

= field above an infinite plane of charge.

Chapter 6[edit]

= electric flux

where

Chapter 7[edit]

= electric potential

= change in potential energy (or simply )

Electron (proton) mass = 9.11×10−31kg (1.67× 10−27kg). Elementary charge = e = 1.602×10−19C.

=kinetic energy. 1 eV = 1.602×10−19J

near isolated point charge

Many charges: .

Chapter 8[edit]

defines capacitance.

where A is area and d<<A1/2 is gap length of parallel plate capacitor

 

= stored energy

= energy density

Chapter 9[edit]

Electric current: 1 Amp (A) = 1 Coulomb (C) per second (s)

Current=, where

= (density, charge, speed, Area)

where =current density.

= electric field where = resistivity

, and ,

where is resistance

and Power=

Chapter 10[edit]

where =internal resistance and =emf.

and

Kirchhoff Junction: and Loop:

Charging an RC (resistor-capacitor) circuit: and where is RC time, and .

Discharging an RC circuit: and

Chapter 11[edit]

cross product

, ,
Magnetic force: .
=EXB drift velocity
Circular motion (uniform B field): Period=

Hall effect

Dipole moment=. Torque=. Stored energy=.
Hall field =

Chapter 12[edit]

Free space permeability T·m/A
Force between parallel wires
Biot–Savart law
Ampère's Law:
Magnetic field inside solenoid with paramagnetic material = where = permeability

Chapter 13[edit]

Magnetic flux
Motional if
Electromotive "force" (volts)
rotating coil

Chapter 14[edit]

Unit of inductance = Henry (H)=1V·s/A

Mutual inductance: where =flux through 1 due to current in 2. Reciprocity

Self-inductance:

, , Stored energy=

in LR circuit where .

in LC circuit where

Chapter 15[edit]

AC voltage and current if
RMS values and
Impedance
Resistor where
Capacitor where
Inductor where
RLC series circuit where and
Resonant angular frequency
Quality factor
Average power
Transformer voltages and currents

Chapter 16[edit]

Displacement current where is the electric flux.

Maxwell's equations:




and

Poynting vector =energy flux

Average intensity

Radiation pressure (perfect absorber) and (perfect reflector).

Index[edit]

(Vol. 2):    5:Electric Charges and Fields    6:Gauss's Law    7:Electric Potential    8:Capacitance    9:Current and Resistance    10:Direct-Current Circuits    11:Magnetic Forces and Fields    12:Sources of Magnetic Fields    13:Electromagnetic Induction    14:Inductance    15:Alternating-Current Circuits    16:Electromagnetic Waves

Subpages

  1. transclusions between OpenStax_University_Physics/E&M#Index and Quizbank/Electricity and Magnetism (calculus based)/Equations