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???? Time constant and transformations in RC circuits: demonstrations and simplification tips ???? This video presents the demonstrations of the 63%, 37%, and tangent rules to determine the time constant in an RC circuit, allowing to understand the characteristic time of charge and discharge of the capacitor. It also explains how to transform a differential equation from one quantity (Uc, Ur, i, q) to another without starting from the mesh law, and how to obtain new solutions from those already known without having to solve another differential equation. #timeconstant #RCcircuit #differentialequations #transformation