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8 Cards in this Set
- Front
- Back
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What is capacitance? |
Capacitance is the charge stored per unit voltage |
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What does the area under a charge/voltage graph give? |
The energy stored is equal to the area under charge against pd graph |
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What is the time constant (RC)? |
Time constant (RC) determines how long it takes a capacitor to charge or discharge |
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After one time constant, what does the capacitor charge fall to? |
After one time constant, the charge in a capacitor falls to 37% of the initial value |
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What is the unit of Capacitance? |
The unit of Capacitance is a Farad (F) |
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How do you charge a capacitor? |
When a capacitor is connected to a battery, a current flows in the circuit until the capacitor is fully charged, then it stops |
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Why can no charge flow between the capacitor plates? |
As they are separated by a dielectric (insulator) |
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When discharging, how does the charge on the capacitor decrease? |
When discharging, the amount of charge left on the plates falls exponentially with time |
