FORMULA SHEET
Constants and definitions: eo = 8.85 X 10-12 C2/(N m2);
1 ampere (A) = 1 C/s; 1 volt (V) = 1 J/C; 1 farad (F) = 1 C/V; 1 ohm (W) = 1 V/A; 1 tesla
(T) = 1 N/(A m); 1 weber (Wb)
= 1 T m2 = 1 J/A; and 1 henry (H) = Wb/A = 1 J/A2.
Gauss’ law:
Ohm’s law: or .
Electric
Field:
Force on charge Q: .
Group of point charges: .
Continuous charge: .
Work: Work-Energy theorem: .
Conservative force: .
Power:
Force:
Coulomb’s: .
Lorentz:
Torque: .
Conductor in electrostatic equilibrium: 1. The electric
field is zero everywhere. 2. Excess charge resides on the surface. 3. The
electric field is perpendicular to the surface.
Resistance: .
power: .
Current: .
Flux: