Monday, October 13, 2008

CAPACITANCIA

c=\frac{Q}{\Delta V}=\frac{Q}{Ke\frac{Q}{R}}=\frac{R}{Ke}=4\pi \varepsilon _{0}R

Condensador de placas paralelas

c=\frac{\varepsilon _{0}A}{d}

PARALELO

Capacitancia de un vector cilindrico c=\frac{l}{2Keln\frac{b}{a}}

Combinacion de capacitores electricos

Paralelo

\Delta V_{1}=\Delta V_{2}=\Delta V

Capacitancia equivalente = Ceq=C_{1}+C_{2}

Q=Q_{1}+Q_{2}

Q=Ceq\Delta V
Q_{1}=C_{1}\Delta V
Q_{2}=C_{2}\Delta V
Q_{1}=C_{2}\Delta V
Ceq\Delta V=C_{1}\Delta V+C_{2}\Delta V
Ceq=C_{1}+C_{2}
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