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10-RLC krugovi.pdf

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Utjecaj induktivnosti na prekid struje u LR kruguIsključimo prekidač. Otpor postajebeskonačno velik. Kako se mijenja struja?Promatramo situacije kada zatvorimo P 2 ! Prekid struje s izvorom jer je on kratko spojen.2. Kirchoffovo pravilo ε =LRIdI− L = RI L dI− = dt∫dtR III− L dIR I=t0 0dtln∫ ∫ I0II= −RLtln II0= −R tL0R tI I e − L=t−L / R0 0t−I = I e = I e τ

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