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What is the potential difference between 2 points?
The work done moving 1C of charge between the points
What is an open circuit?
1) A source of EMF connected only to a voltmeter
2) As there is no current there are no lost volts
3) The voltmeter can read the actual EMF
What is a short circuit current?
1) When there is no external resistance R=0
2) Current = EMF÷internal resistance
What is the relationship between the charges stored on 2 plates and the voltage between them?
As on increases so does the other
What is the effect of frequency on resistors and capacitors?
No effect on resistors
Capacitors - current increases with frequency
For an ideal op-amp what is the condition for voltage?
No pd between the input terminals
Both input terminals at the same pd
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