Fyzika

Elektrina

Ohmov zákon, odpor, práca a výkon prúdu. Jednotky volt, ampér a ohm sa dajú prepnúť.

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U = R I

F·Elektrina·Maturita·Nákres

R = \rho \dfrac{l}{S}

F·Elektrina·Maturita

R_s = R_1+R_2,\quad \dfrac{1}{R_p} = \dfrac{1}{R_1}+\dfrac{1}{R_2}

F·Elektrina·Maturita

P = U I = R I^{2} = \dfrac{U^{2}}{R}

F·Elektrina·Maturita

F = k \dfrac{|q_1 q_2|}{r^{2}},\quad k=\dfrac{1}{4\pi\varepsilon_0}

F·Elektrina·Maturita

C = \dfrac{Q}{U},\quad E = \tfrac{1}{2} C U^{2}

F·Elektrina·Maturita

\dfrac{U_1}{U_2} = \dfrac{N_1}{N_2} = \dfrac{I_2}{I_1}

F·Elektrina·Maturita

I_{\mathrm{ef}} = \dfrac{I_0}{\sqrt{2}},\quad U_{\mathrm{ef}} = \dfrac{U_0}{\sqrt{2}}

F·Elektrina·Maturita

I_1 = I_2 + I_3

F·Elektrina·Maturita

U_1 + U_2 + U_3 = 0

F·Elektrina·Maturita

E = \tfrac{1}{2} C U^{2}

F·Elektrina·Maturita