Higher Physics

Electricity and Electronics - Activity 13

Current and frequency in a capacitive circuit

Aim - To establish a relationship between the current in a capacitive circuit and the frequency of the a.c. supply     Instructions
Click on the right of the frequency dial to increase the frequency of the signal generator.
Click on the left of the frequency dial to decrease the frequency of the signal generator.
  • Switch on the signal generator.
  • The output of the signal generator is set at 3 V (peak).
  • Increase the signal generator frequency and record readings of current and frequency, using a range of 100 Hz to 1 kHz.
  • Monitor the oscilloscope to ensure that the output voltage remains constant.
  • Use an appropriate format to show the relationship between current and frequency.
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