Switch a in the circuit shown has been open for a long time, and switch b has been closed for a long time. Switch a is closed at t remaining closed for 1 s, is opened again. Switch b is opened simultaneously, and both switches remain open indefinitely. Determine the expression for the inductor current i that is valid when (a) 0 < t < 1s and (b) t 1 s. 7.8 O and, after %3D t = 1 8 A t 1 a 20 0.8 Ω 10 V 30 2 H3 3Ωξ

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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).