A2L Item 247

Goal: Link energy with electrical quantities

Source: 283 – energy in capacitor

Consider the following circuit. The capacitor is uncharged when switch S
is closed at t = 0. After current stops flowing and the capacitor is
fully charged the energy stored in the capacitor is:

  1. V^2^/R
  2. CE^2^/2
  3. QV/2
  4. V/RC
  5. none of the above



(3) The intent of this question is to provide students the opportunity
to distinguish a correct but uncommon form for the stored energy from a
number of other familiar forms.