Capacitors
Knowledge you need to have:
Knowledge that a capacitor of 1 farad will store 1 coulomb of charge when the potential difference across it is 1 volt.
Knowledge that the total energy stored in a charged capacitor is equal to the area under a charge-potential difference graph.
Knowledge of the variation of current and potential difference with time for both charging and discharging cycles of a capacitor in an RC circuit (charging and discharging curves).
Knowledge of the effect of resistance and capacitance on charging and discharging curves in an RC circuit.
Description of experiments to investigate the variation of current in a capacitor and voltage across a capacitor with time, for the charging and discharging of capacitors.
Skills you need to develop:
Use of an appropriate relationship to solve problems involving capacitance, charge and potential difference.
Use of an appropriate relationship to determine the charge stored on a capacitor for a constant charging current.
Use of appropriate relationships to solve problems involving energy, charge, capacitance, and potential difference.