In this new lesson, Bobby, Billy, Bo and I explore the capacitance of a parallel-plate capacitor, including what happens when a dielectric is inserted between the plates. We work through why adding a dielectric to an electrically isolated capacitor decreases the electric field and electric potential difference between the plates, and therefore increases the capacitance. We also revisit an important idea: capacitance depends only on the physical properties of the capacitor, not on the charge stored or the electric potential difference.
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