Couplers
ΒΆ
Coupling
refers to the transfer of a signal from one medium or circuit block to another.
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Admittance in parallel connection
Capacitance in parallel connection
Capacitance is proportional to plate area
Capacitance of spherical capacitor
Capacitor impedance from capacitance and frequency
Coil impedance via inductance and frequency
Energy stored in capacitor via capacitance and voltage
Energy stored in inductor via inductance and current
Impedance in serial connection
Inductance in serial connection
Oscillation period of inductor-capacitor network
Resistivity of serial resistors
Sum of currents through junction is zero
Sum of voltages in loop is zero
Time constant of resistor-capacitor circuit
Voltage across charging capacitor in serial resistor-capacitor circuit
Maxwell equations
Electromagnetism (Vector)
Absolute permittivity via relative permittivity
Admittance is conductance and susceptance
Capacitance from charge and voltage
Charge is quantized
Current is voltage over resistance
Electric charge is constant in isolated system
Electric dipole moment is charge times distance
Electric displacement is permittivity times electric field
Electric field due to dipole
Electric field due to point charge
Electric field is force over test charge
Electric field of uniformly charged plane
Electric field outside charged sphere
Electric flux through closed surface via total charge
Electromotive force induced in moving contour
Electromotive force induced in rotating rod
Electromotive force induced in rotating coil
Electrostatic force via charges and distance
Electrostatic potential due to point charge
Electrostatic potential energy of two charges via distance
Electrostatic potential is work to bring from reference point over charge
Energy density via permittivity and electric field
Energy via constant power and time
Inductance is magnetic flux over current
Inductance via number of turns and coil volume
Magnetic field due to infinite wire
Magnetic field of coil
Magnetic moment via current and contour area
Period of rotation of charged particle in magnetic field
Power factor is real power over apparent power
Power via current and resistance
Power via voltage and current
Power via voltage and resistance
Radius of curvature of charged particle in magnetic field
Resistance via resistivity and dimensions
Self-induced electromotive force via time derivative of current
Voltage is electric field times distance
Voltage is line integral of electric field
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