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Capacitors

Definitions/ Quick-fire questions

QuestionAnswer
What do capacitors do, and what is needed to do it?
What is the definition of capacitance?
Why do we always charge and discharge capacitors through a resistor?
What is the energy stored in a capacitor equal to? (Three answers)
Draw 4 graphs to show how current in the circuit and p.d. across capacitor changes with time when charging and discharging.
When fully charged, what is the p.d. across the resistor?
What happens to energy stored if voltage is doubled?
What is ex, and its limits?
What 3 things fall away according to e-t/RC?
When t=RC, this gives e-1. What is this ratio/percentage equal to?
Created by: emanotawake
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