by Nikolai Shokhirev
Units of measures | ABC Tutorials | Home
| Quantity | Formula | Comment |
| Coulomb interaction energy |  J = C V |
The permittivity of vacuum 
connects charges with energy
|
| Coulomb interaction force | 
|
and force. |
| Biot-Savart Law |  [tesla] [newtons]
|
-
velocity
|
| Magnetic Field due to a Long Straight Wire | 
|
|
| Force Between Long Parallel Wires | 
|
The force is attractive if the currents are in the same direction and repulsive otherwise. |
| Lorentz Force Law | 
|
Combined electro-magnetic force |
| Magnetic dipole is the magnetic moment from a small loop of a current |
|
I is electric current, S is area inside the loop |
| Magnetic dipole-dipole interaction | 
|
|
| and connection | 
|
Permittivity and Permeability are connected via the speed of light |
| Gravitational interaction | 
, [joule]
|
G is the gravitational constant |
Units of measures | ABC Tutorials | Home