| Aim - To
observe the variation of the current through, and the p.d. across the capacitor during the
charge and discharge cycle. |
Instructions |
| |
The capacitor
is discharged and the switch is open. |
- Click the red buttoned switch to close the switch and start the timer.
|
- Record values of current I and p.d. V every 10 seconds
until the measured p.d. becomes constant
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- Plot graphs of current I and p.d. V against time as
the capacitor charges.
|
- Describe the change in the current and p.d. as the capacitor charges.
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- Click on the button to change the circuit to allow the capacitor to be discharged.
The capacitor is initially fully charged and the switch is open.
|
- Click the red buttoned switch to close the switch and note values for current I and
p.d. V for the capacitor every 10 seconds
|
- Plot graphs of current I against p.d. V against time
as the capacitor discharges.
|
- Explain the change in current and p.d. as the capacitor discharges.
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- Compare the direction of current during the charging and discharging cycle and explain
any differences.
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| Copyright Physics Support Materials 2000 |