Electric fields less than 1 minute read Definition of electric fields fold/unfold $$ \begin{flalign*} \vec{E} = \frac{\vec{F}}{q_0} && \end{flalign*} $$ Where, $q_0$ is test charge which become the standard of electric fields. By the Coulomb's law, we can get the following equation. Share on X Facebook LinkedIn Bluesky Previous Next
Voltage, current, and resistance less than 1 minute read Kirchhoff's voltage law(KCL) If there are n currents flowing into or out of a node, they satisfy the following equation.
Charge less than 1 minute read Coulomb's law fold/unfold $$ \begin{flalign*} \vec{F_e} = k_e\frac{q_1q_2}{r^2}\hat{r} && \end{flalign*} $$ $$ ...
Arbitrary T period Fourier series less than 1 minute read Definition of Fourier series fold/unfold $$ \begin{flalign*} f(t) = a_0 + \sum^\infty_{n=1} a_n \cos(n\omega_0 t) + \sum^\infty_{n=1} b_n \sin(n\ome...
Orthogonality of the trigonometric system 1 minute read Formulas \(\begin{flalign*} &\int_{-\pi}^\pi \cos nx \cos mx = \begin{cases} 0 & (n \neq m) \\ \pi & (n = m \neq 0) \\ 2\pi & (n = m = 0) \...