Experiment goal: Measure how fast the coil is reacting to an AC current, estimate its inductance, internal resistance observe the phase difference and effects of frequency. [Q4-Lab/Home* *] Keep the same configuration as before (i.e. the big $% coil in series with 100 0 resistor (keep using the resistor box so you can do additional exploration). Set your FG to 10 Hz, 10 Vp and correct it to your circuit. Probe your PASCO for current in the circuit and across the inductor. Run the experiment for about 1 second. Save/Export your data, study the plots (voltage vs. time and current vs. time). Now probe the resistor for voltage. Run the experiment for 4-5 seconds. Save/Export your data, study the plots (voltage vs. time and current vs. time). With these two runs you have acquired all the necessary data to answer the following questions: If you have no access to the lab find the data here (first run) and here (second run). [Note: this is the same process followed in the previous lab for the capacitors just a bit more concatenated given you have built some experience]. Q4A) Using the current and Vi time-series estimate the phase difference between the inductor and the circuit voltage (i.e. current) Q43) Using the current and V time-series estimate the phase difference between the resistor and the circuit voltage (i.e. current) Q4c) Using the current and V time-series (either rms or peak as long as you are consistent) re- estimate the inductance L. Careful! This is not such a trivial task. Here's why: Assume we already know the inductance from the previous exercise. It should be about 1 H. If one argues that V = i . X then we use peak values from the graph you will find out that you are very far from the truth. You need to address what's going on there first in order to re-estimate the inductance. [Do not blame this difference on the usual suspect aka accuracy but on the fact that you did not actually measured V ...] Q4D) Investigate the effects of the frequency on the voltages across the inductor and the resistor when frequency goes from 100 Hz (the default of previous virtual circuit found here) to e.g. 500 Hz, 1 kHz etc. Explicitly discuss what happens to VI, VR the phase angle between the inductor and the circuit and the current as frequency increases. Watching this screencast [minute --9:00-10:00] will help you evaluate and visualize some of your results. [Caution here: you can no longer use PASCO since you have sampling limitation; use the scope instead]