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 Suggested Teaching Activities

Studying Ohm's Law

Investigating the resistance of a resistor
1. Connect the Science Workshop interface to a notebook, turn on the interface, and turn on the notebook.

2. Double-click the icon "Science Workshop English" on the Windows Desktop.

3. Connect the circuit as shown in Figure 1. Turn the dial on the resistance box to set the resistance to 10 .

- Figure 1 -

4. Click to set Sample V as shown in Figure 2.

- Figure 2 -

5.

Click to set sine wave in the AC Waveform panel. Input the Amplitude as 3V and the Frequency as 10 Hz. Click the icon Auto to set to automatic power output.

- Figure 3 -

6. Click to set Sample I as shown in Figure 2.

7. Drag the icon Scope to OUTPUT.

- Figure 4 -

8. Set the y-input of the scope to V and 1.000 V/div. Set the x-input of the Scope to I and 2.000 V/div. Set the recording rate as 200 samp/s (200 samples per second).

- Figure 5 -

9. Click the icon MON (Monitor) as shown in Figure 2. You should obtain the result as shown in Figure 5.

10. Click the icon REC (Record) as shown in Figure 2, to obtain the result.

11. In order to analyse the data, drag the icon Graph to OUTPUT.

12. As shown in Figure 6, set the y-axis of the graph to V and set the x-axis to I.

 - Figure 6 - - Figure 7 -
13. Click the Autoscale button to resize the graph.

14. Click the icon to run the statistics tool.

15. Click the icon to analyse the graph.

16.
 Click as follows to use the linear fit function: ->Curve Fit ->Linear Fit - Figure 8 -

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