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Keep going! Check out the next lesson and practice what you’re learning: https://www.khanacademy.org/science/e... Impedance of two elements in series is a complex number. Impedance terminology: reactance, susceptance, admittance.
Demonstration that Kirchhoff's voltage law applies in the frequency domain. The voltage phase offsets around a loop sum to zero.
Keep going! Check out the next lesson and practice what you’re learning: https://www.khanacademy.org/science/e... Remember the relationship between current and voltage in an inductor and capacitor with the help of ELI the ICE man.
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/science/e... Visualizing the Fourier expansion of square wave. A square wave can be approximated by adding odd harmonics of a sine wave.
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/science/e... Finding Fourier coefficients for square wave
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/science/e... Formula for Fourier coeffients for sine