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From Mark Shapiro*************************************************************************
Have you discussed conservation of charge in the course? If you have then
an explanation like "the battery moves electrons from the plate connected
to the positive terminal to the plate connected to the negative terminal...
since the plate connected to the positive terminal was initially neutral
You could point out that a capacitor in a circuit acts like a resistor*************************************************************************
in the sense that the current in one lead of a capacitor equals the
current in the other lead during charge and discharge. When in a circuit,
every time you push a charge into one end of a capacitor, the electrostatic
force pushes one charge out the other end, and the net charge Q1-Q2 stays
zero.