Day 26

  This picture shows the graph and equation of alternating current and voltage.

  These pictures show the relationship of Vrms,Vmax,Irms and Imax.

  There is an example problem we did in class.

  We started to do the alternating currents and voltages experiment on the lab manual.

  This is our set up for the lab.

  These two graphs are the alternating current graph and alternating voltage graph we found by using Logger Pro.

  We calculated the Vmax,Vrms and theoretical Vrms, then we calculate the percent error.

  We calculated the Imax,Irms and theoretical Irms, then we calculate the percent error.

  We found out the amptitude of current is longer than voltage.

  This is a example problem that professor gave us, we need to calculate Xc and Irms.

  Then we started capacitors in an AC circuit lab.

  This is our set up for the lab. We set frequency is 100 Hz and voltage is 2 V.

  There are the graphs of current and voltage. And we found Imax is 0.116A and Vmax is 2.005V.

  We found the Vrms, Irms, theoretical capacitive reactance and experimental capacitive reactance. Then we calculate the percent error is 18%.

  We calculate Irms by hand to make sure our data is correct.

  We found a new equation I=-V_max/wL*cos(wt+theta)usingV=V_max*sin(wt+theta).

  There is a example problem professor gave us. We need to calculate XL and Irms.

  We started to do inductors in alternating circuits experiment on the lab manual.

  There are current graph and voltage graph we found for the experiment by using Logger Pro.

  This is the chart we filled by using the data we collected.

Conclusion:
  Today, we did many experiments about Vrms,Vmax,Irms and Imax. First, professor showed us the equations and graphs about alternating current and voltage. Then we started to do alternating current and voltage lab to found Vrms,Vmax,Irms and Imax and calculate the percent error. Then we did some exercise to calculated Irms. After, we did inductors in alternating circuit lab and capacitors in AC circuit lab which same as alternating current and voltage lab, find Vrms,Vmax,Irms and Imax, then calculate percent error.