21. Your laboratory TA poses the following scenario to you for practice I wired

Question

21. Your laboratory TA poses the following scenario to you for practice I wired a series RLC circuit and set the driving frequency to be the resonant frequency. Then I either mserted an iron core into the inductor or I removed an iron core from the inductor. After making that change, whichever it was, I measured three traces which are on the picture below. One is the curent in the circuit, one is the function generator's voltage, and one is the inductor's voltage. Which of the following statements are correct? A. Trace 1 is the fiunction generator's voltage, and the iron core was inserted. B. Trace 2 is the curent, and the iron core was inserted C. Trace 3 is the finction generator's voltage, and the iron core was removed Trace 3 is the fmction generator's voltage, and the iron core was removed D. Trace 1 is the inductor's voltage, and the iron core was inserted E. Trace 2 is the inductor's voltage, and the iron core was removed

Explanation / Answer

A. correct because function generator voltage is indpendent of either inserting or removal of iron rod

B correct

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