Talk:A-level Physics/Forces, Fields and Energy/Capacitors

Specification
From the OCR GCE Physics A specification. Tick with &#10004; when you feel each part of the specification has been covered. Try not to add much more than what is in this list as it would not appear in the exam anyway. Use links to wikipedia for more depth in a topic.


 * 1) &#10004; Define capacitance and the farad.
 * 2) &#10004; Recall and use C = Q / V.
 * 3) &#10004; Use formulae for the capacitance of capacitors in series and in parallel.
 * 4) Recall and use W = ½QV, for the energy of a charged capacitor.
 * 5) Describe the discharge of a capacitor through a resistor, sketch graphs showing the variation with time of the potential difference, charge stored and current during this discharge.
 * 6) Appreciate the practical importance of time constant for discharge of a capacitor through a resistor.
 * 7) Recall τ = CR for the time constant of a capacitor-resistor circuit.
 * 8) Use equations of the form x = x0 e-t/CR for the discharge of a capacitor.