# Capacitors and Dielectrics

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## Capacitors and Dielectrics

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Today we discussed capacitors and how they relate to capacitance and dielectrics. (Cutnell 19.5)

Lecture number:
7
Pages:
3
Type:
Lecture Note
School:
The University of Vermont
Course:
Phys 012 - Elementary Physics
Edition:
1
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Unformatted text preview:

Lecture 7 Outline of Last Lecture I. Work done by a conservative force is equal to the negative change in potential energy (in joules). a. Wc = -ΔEPE b. II. Electric Potential (V) a. V = EPE/q0 = kq/r b. Scalar quantity c. Different way to describe an electric field d. ΔVAB = ΔEPEAB/q0 = -Edq0/q0 = -Ed e. ΔVBC = 0 ; VB = VC f. ΔVAC = -Ed = ΔVAB g. Equipotential line: line on which every point has the same electric potential (ex. line BC on diagram above); perpendicular to electric field lines h. Equipotential surface: surface on which every point has the same electric potential i. A positive charge that moves with the electric field will have a decreasing electric potential energy. A negative charge that moves with the electric field will have an increasing electric potential energy. j. Electric potential decreases further from the source charge. Outline of Current Lecture PHYS 012 1st Edition

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