S2 Ro L ww a
Sinusoids And Phasors
Sinusoids are defined as the mathematical waveforms that are used to describe the nature of periodic oscillations.
Circuit Theory
Electric circuits are a network that comprises of a closed-loop, which helps in providing a return path for the current through a switch. When the switch is activated, the load operates, and the current accepts a path to finish the circuit at a low potential level from the opposing high potential level. Electric circuits theory is a linear analysis that helps in establishing a linear relation of voltage and current for R (resistance), L (inductance), and C (capacitance).
Consider the circuit shown in Fig. Let E = 36.0 V, R0 = 50.0 Ω, R = 150 Ω, and L = 4.00 H. (a) Switch S1 is closed and switch S2 is left open. Just after S1 is closed, what are the current i0 through R0 and the potential differences vac and vcb? (b) After S1 has been closed a long time (S2 is still open) so that the current has reached its final, steady value, what are i0, vac, and vcb? (c) Find the expressions for i0, vac, and vcb as functions of the time t since S1 was closed. Your results should agree with part (a) when t = 0 and with part (b) when t → ∞. Graph i0, vac, and vcb versus time
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