Electromagnetism
Electric Force
Electric Force between a Finite Line and a Point Charge
Electric Force between an Infinite Line and a Point Charge
Electric Force on a Conducting Sphere
Electric Resistance
Electric Current
Magnetic Field from Current & Distance
Current Density from Free Electrons
Atoms per Volume
Current Density from Volts & Ohms
Fermi Speed
Drift Velocity of Electron
Electron Degeneracy Pressure
Stefan-Boltzmann Law
Stefan-Boltzmann Law (for stars)
Blackbody Frequency
Microscopic View of Ohm's Law (courtesy of GSU)
Current Density from Free Electrons
Atoms per Volume
Electric Resistance
Electric Current
Current Density from Volts & Ohms
Fermi Speed
Drift Velocity of Electron
Conductivity
Electric Resistance
R
=
ρL/A
where:
R
=
resistance (ohms)
ρ
=
resistivity
L
=
length
A
=
area
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