1. This integrated laboratory activity is designed to help upper-division undergraduate students understand the connection between an impulse driving voltage and a harmonic driving voltage.
  2. Students predict and then observe the current response (as measured by voltage across the resistor) of a series LRC circuit with an impulse driving voltage. They Fourier transform the current reponse to frequency space and compare to the admittance (resonance response) obtained withsingle-frequency sinusoidal driving voltages.
  3. The wrap-up discussion focuses on the connection between single and multiple-frequency driving voltages, and in particular how a delta function is a superposition of all single-frequency harmonics with equal amplitude.

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