Units and Equations - Section 1 Flashcards
Electric Force Units
Newtons
Electric Force Equation
F = k(q1 X q2)/r^2
Coulomb Constant
9 X 10^9 (N X M^2)/C^2
Electric Field Units
Newton/Coulomb
Electric Field created by a point charge
E = k X q/r^2)
Electric Field Equation
E = F/q
Electric Flux (Gauss’ Law)
(Sum of (E X cos theta)) X delta A = (4(pi)(k)) X Qnet
Work between A and B
W(AB) = EPE(A) - EPE(B)
Electric Potential Units
Joule/Coulomb = Volt
Electric Potential Equation
V = EPE/q0
Electron Volt
1.6 X 10^-19 J
Net Energy
1/2mv^2 + Iw^2 + mgh + 1/2kx^2 + EPE
Electric potential at distance r from point charge
(k X q)/r
Net Electric Potential
V1 + V2 + V3 +……
Electric field between surfaces
E = - (delta V)/(delta S) = voltage/displacement
Potential Gradient
delta V/delta S = voltage/displacement
Potential Gradient Units
Volts/meter
Magnitude of charge on plates of capacitors
q = CV —> C = capacitance & V = potential difference between the plates (voltage)
Unit of charge on a particle
Coulomb
Capacitance Units
Coulomb/Volt = Farad
