Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
4 Cards in this Set
- Front
- Back
|
Tests for measuring how voltage changes as a capacitor discharges: |
Use a high-resistance voltmeter connected in parallel with the capacitor. Keep the current constant by constantly adjusting a variable resistor. Use a stopwatch to measure the voltmeter reading at regular intervals or use a data logger. The graph produced will have a straight line whose gradient is equal to the capacitance of the capacitor. |
|
|
Capactiance |
The charge stored per unit pd. |
|
|
Energy stored in a capacitor |
1/2QV = 1/2CV^2 = 1/2 Q^2/C 1/2 of the energy supplied by the battery is stored in the capacitor, the other half is wasted due to resistance in the circuit. |
|
|
Measuring the energy stored in a charged capacitor. |
pass |
