OpenStax University Physics/E&M
This will be the new landing page for the MOM course at the following link: |
Each link below leads two different variations of equation sheets used in the electromagnetism unit OpenStax University Physics (Volume 2 Unit 2).
- These equations[1] can be given to students as they take chapter quizzes based on examples in the textbook OpenStax University Physics
- A study guide for these quizzes can be found at Quizbank/Electricity and Magnetism (calculus based)
- Most solutions for the questions can be found by reading the examples in Unit 2 of the textbook.
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.
= electric flux
where
= 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: .
defines capacitance.
where A is area and d<<A1/2 is gap length of parallel plate capacitor
= energy density
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=
where =internal resistance and =emf.
and
Charging an RC (resistor-capacitor) circuit: and where is RC time, and .
Discharging an RC circuit: and
,
,
Magnetic force: .
=EXB drift velocity
Circular motion (uniform B field): Period=
Dipole moment=.
Torque=.
Stored energy=.
Hall field =
Lorentz force =
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
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
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
Displacement current where is the electric flux.
and
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
- ↑ transclusions between OpenStax_University_Physics/E&M#Index and Quizbank/Electricity and Magnetism (calculus based)/Equations