2023-10-02 18:10:15 +02:00
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# Přehled vzorečků
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## Ohmův zákon
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2023-10-02 19:09:10 +02:00
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$I = \dfrac{U}{R}$ $~~~~~~~~~~~$ $U = I*R$ $~~~~~~~~~~~$ $R = \dfrac{U}{I}$
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## Qolumbův zákon
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$Q = N * e$ $~~~~~~~~~~~$
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$Q = I * t$ $~~$ [$C, A, S$] $~~~~~~~~~~~$
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$Q = C * u$ $~~$ [$C, F, V$]
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## Intenzita elektrického pole
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$E=\dfrac{F_e}{q}$ $~~$ [$V*m^{-1}$]
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## Newtonův gravitační zákon
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$F_g = K*\dfrac{m_1*m_2}{r^2}$ $~~~~~~~~~~~$
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$F_e = k_e*\dfrac{Q_1*Q_2}{r^2}$
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## Závislost odporu na teplotě
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$R = R_0*(1+\alpha*\Delta t)$
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- $\alpha$ = součinitel [$K^{-1}$]
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## Rezistivita
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$R=\rho*\dfrac{l}{S}$ $~~$ [$Ω;Ω*m*\dfrac{m}{m^2}$]
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- S = průřez vodiče, l = délka vodiče
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## Plocha kruhu
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$S=\pi*r^2=\dfrac{\pi*d^2}{4}$
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## Práce
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### Výkon
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$W=F*S$ $~~$ [J] $~~~~~~~~~~~$
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$W = g*m*h$ $~~~~~~~~~~~$
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$W = F_e*d = E*Q*h$
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#### Elektrický výkon
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$P=U*I$ $P=\dfrac{W}{t}$
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#### Elektrické pole
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$E=\dfrac{F}{Q}$ $~~~~~~~~~~~$ $\mid E \mid = K_e*\dfrac{\mid Q \mid}{r^2}$
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