Day 27 RLC Circuits

At the beginning of the class, we started off by finding what happened to Irms if we double the w (omega). And we got that Irms also increase double.

This is an experiment when we needed to measure Irms and Vrms to calculate theoretical Z and compared with the actual Z

This graph shows V and I, and the box on the line is how we gather our data for Vmax and Imax.

In the data table about, we compared the theoretical Z and actual Z difference for  10 Hz frequency and 1000 Hz frequency. For 10 Hz, the percent error was 8%. But for the 1000 Hz, the percent error was 773% which was incredibly high.

This is the graph of current of 1000 Hz. And this is the best graph we could get because the frequency was so high, and we had to measure V and I separately to get the right data.

Then we calculated the angle because two frequency by the equation shown in the picture.

We used another equation to calculate the angle again, and the results came out almost the same.

Then we started to do a problem on RLC circuit. We calculated the frequency as 5033 Hz in the circuit.

For the 3000 Hz, we found that the Irms is 2.06A by the equation Vrms/Z. 

This is the equation to calculate power in this circuit because resistor is the only thing dissipates power.

Then we did another experiment about RLC circuit.

We used multi-meter to find that V and I, and calculated that Zexp is 15.5

Conclusion

In today's class, we were introduced Vrms, Irms, and Z. We also learned and did some experiments on RLC circuits.