Electrostatics (AP Physics C: E&M) Glossary

SI charge unit. Electron: $-1.6\times10^{-19}$ C.

$\pm q$ separated by $d$. $\vec{p}=q\vec{d}$.

$\Phi_E=\int\vec{E}\cdot d\vec{A}$. Units: Nm$^2$/C.

$\vec{E}=0$ in conductors. Charge on surfaces.

Constant $V$ surface. $\perp$ to $\vec{E}$.

Imaginary closed surface for Gauss's law.

$\lambda=dQ/dl$. C/m.

$\varepsilon_0\approx8.854\times10^{-12}$ C$^2$/(Nm$^2$).

$E\propto1/r^2$, $V\propto1/r$.

$\Delta V=-\int\vec{E}\cdot d\vec{l}$. Units: V.

Conductor blocks external fields. Faraday cage.

Total = sum of individual contributions.

$\sigma=dQ/dA$. C/m$^2$.

Infinitesimal $q_0$: $\vec{E}=\vec{F}/q_0$.

$\rho=dQ/dV$. C/m$^3$.