List of formulas related to magnetism
Magnetic Flux Through The Open Surface S
B: magnitude of the magnetic field (T, tesla), α: angle between B and perpendicular line to surface S.
$$ \phi = BS cos \alpha (Wb, W eber) $$Magnetic Forces On Moving Charges
v: velocity of the charge (m/s)
$$ \alpha = (\vec{B}, \vec{v}) $$ $$ f = |q|vB sin \alpha $$Force On A Current Carrying-Wire
I: current (A), l: length of the wire (m)
$$ F = BIl sin \alpha $$Force Between Two Parallel Current-Carrying Wire
r: distance between two wires (m)
$$ F = 2.10^{-7} \frac{I_1 I_2}{r} l $$Magnetic Field Of A Long Current Charge Wire
r: perpendicular distance from the center of the wire (m)
$$ B = 2.10^{-7} \frac{I}{r} $$Magnetic Field Of A Loop
N: numbers of turns per unit length of solenoid (turns/m)
$$ B = 4 \pi 10^{-7} nI $$Induced Electromotive Force- Faraday's Law
N: numbers of turns per loop (turns/m)
$$ \xi _C = - N \frac{\Delta \phi}{\Delta t} $$