Magnetic field

Magnetic force between parallel conductors
F = μ * μ0 * I1 * I2 * l / (2 π r)

Magnetic force between parallel conductors
F = 2 * 10^(-7) * μ * I1 * I2 * l / r

Magnetic constant
μ0 = 4π * 10^(-7)

Magnetic field intensity
H = I / l

Magnetic field induction
B = μ0 * μ * H

Maximum force moment of the magnetic field
M_max = B I S

Magnetic induction
M = I S B sin(a)

Moment of a uniform magnetic field
p_m = I * S

Magnetic field (induction) due current in finite straight conductor (wire)
B = μ * μ0 * I * (cos(a1)+cos(a2)) / (4 π r)

Magnetic field (induction) due current in infinite straight conductor (wire)
B = μ * μ0 * I  / (2 π r)

Magnetic field due to current in circular wire (turn)
B = μ * μ0 * I / (2 R)

Magnetic field intensity (strength): infinite straight wire
H = I / ( 2 π r)

Magnetic field intensity (strength) at the center of circular wire (turn)
H = I / (2 R)

Magnetic induction of solenoid
B = μ * μ0 * N * I / l

Magnetic field intensity (strength) of solenoid
H = N*I / l

Magnetic flux and angle
Φ = BS cos(a)

Magnetic flow (flux)
Φ = BS

Ampere's force
F = I * l * B * sin(a)

Magnetic induction and Ampere's force
B = F_max / (I * l)

Lorentz force
F = q v B sin(a)

Lorentz force and Ampere's force
F_L = F_A / N

Force of electromagnetic field
F = qE + qvB sin(a)

Radios of motion trajectory of charged particle in magnetic field
r = mv /(qB)

Rotation period of charged particle in magnetic field
T = 2 π m / (qB)