Passive RC Circuit Natural Response

This morning I went to wake up my dog.

Start of this class we did some problems related to RC and RL circuits...

Problem(1)

Problem(2)

Starting Lab...

We first calculated the voltage across capacitor when it is fully charged and the times it takes to discharge 99% of charge.(It happens when time elapsed 5 times of time constant(tau). It was 0.0756 second. The actual resistance for 1k-ohm was .95k-ohm and 2.2k-ohm was 2.13k-ohm

We used Triggering and Single Acquisition feature from Appendix.

Discharge time we have got from two data point was -22.17ms(initial) and 118.6ms(Final).

Charge time we got from two data point was -5.13ms(initial) and 105.1ms(final), and max voltage was 3.48V which is very close to what we expected.

Summary:we calculated it will take 0.0756 second to fully discharge the capacitor, however, experimental value says it will take 0.14 second to discharge, twice of what we calculated. So there is mistake in our calculation or lab procedure. For time for it to charge, it was 0.11 second, but we did not calculate the times for circuit to fully charge itself.(we forgot and we thought we don't need it). We got our maximum voltage for capacitor correct, which we calculated to be 3.43V and measured amplitude is 3.48V.