Passive RL Circuit

For this lab we had to connect a resistor parallel to an inductor and calculate the current and time constant of the inductor.

Our R1 value was 100 ohms, our R2 was 47 ohms. Our inductor had a value of 1uH.
We calculated that the inductor had a current of 0.05 amps at time zero, and 0 amps at time infinity. Our time constant was 0.031 us
Leading to the equation

      i(0)=0.05e^-t/(.031us)

Here's a picture of the calculations  and circuit diagram


                                                                           
               
Here are pictures of the oscilloscope

this is a graph of the voltage through the resistors

This is the graph for the current that we created using the values obtained from the resistor graph.

Around the 2ms mark the inductor current is shut off. The current is capped at 40mA, our value was 50mA which is not that far off. However, we could not figure out a way to calculate the time constant from the data.

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