INTERACTIVE EXAMPLE
© Copyright, Department of Physics, University of Illinois at Urbana-Champaign
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Physical Capacitor


An air-gap parallel plate capacitor of capacitance C0 = 20 nF is connected to a battery with voltage V = 12 V. While the capacitor remains connected to the battery, we insert a dielectric (κ = 2.6) into the gap of the capacitor, filling one half of the volume as shown below.

What is Qfinal, the charge on the capacitor in the final situation?

Qfinal = C