5 kN 20 k2 i(1) + VR - t = 0 5 µF v2 100 V 20 μ
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).
The switch in Fig. 8.73 is moved from A to B at t = 0 after being at A for a
long time. This places the two capacitors in series, thus allowing equal and
opposite de voltages to be trapped on the capacitors
(d) Find vr(t), t > 0. (e) Find i(t). (f) Find vi(t) and
v2(t) from i(t) and the initial values. (g) Show that the stored energy at i = 0
plus the total energy dissipated in the 20 kS2 resistor is equal to the energy
stored in the capacitors at t = 0
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