You measure the potential difference across a resistor in an LRcircuit at different times and record the following results. (Notethat this set of data is taken after the switch is opened, i.e. thevoltage/current across the resistor is decreasing.)
Voltage (V) Time (s)
5.60 2.60
4.20 5.96
2.80 10.69
1.40 18.78
The initial peak in the voltage reading is 7 V.
(a) Analyze the data. (You will not submit this spreadsheet.However, the results will be needed later in this problem.)
(i) Enter the above data into an Excel spreadsheet.
(ii) Create a plot of -ln(V/V0) vs. time.
(iii) Use the trendline option in Excel to fit the data of-ln(V/V0) versus time to get the slope.
(b) What is the slope of the plot of -ln(V/V0) versus time?
slope =
(c) Calculate the time constant from the slope.
t =
You measure the potential difference across a resistor in an LRcircuit at different times and record the following results. (Notethat this set of data is taken after the switch is opened, i.e. thevoltage/current across the resistor is decreasing.)
Voltage (V) Time (s)
5.60 2.60
4.20 5.96
2.80 10.69
1.40 18.78
The initial peak in the voltage reading is 7 V.
(a) Analyze the data. (You will not submit this spreadsheet.However, the results will be needed later in this problem.)
(i) Enter the above data into an Excel spreadsheet.
(ii) Create a plot of -ln(V/V0) vs. time.
(iii) Use the trendline option in Excel to fit the data of-ln(V/V0) versus time to get the slope.
(b) What is the slope of the plot of -ln(V/V0) versus time?
slope =
(c) Calculate the time constant from the slope.
t =
