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Electric Potential
Electric Potential
12
Physics
11th Grade
11/13/2008

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Term
Electric Potential (Va) (3) unit?
Definition

Potential Energy per unit charge

Va=PEa/q

V=k Q/r

volts (V) 1V=1J/C 

Term
Electric Potential ENERGY
Definition
U = W = kq1q2/r
Term
Change in Electric POTENTIAL (ΔV)
Definition
ΔV= - ΔW/q
Term
Workelec (2)
Definition
W = qV = qEd
Term
Electric Field
Definition
E = -ΔV/d
Term
Equipotential
Definition

line or surface which potential is constant

perpendicular to electric field lines (E)

Term
Electron Volt (eV)
Definition
energy gained by an electron moving through a potential difference of one volt
Term
Capacitor (2)
Definition

ability to store elec charge (q)

can retain charge even when disconnected from voltage source

Term
Capacitance
Definition

C = Q/V (F)

C = €0 A/d

1 Farad = 1 C/V

Term
Dialectrics (3)
Definition

an insulator

reduces electric field (E)

reduces PE


Term
Dielectric Strength
Definition
maximum field a dielectric can experience without breaking down
Term

Stored energy (PE) (3)

Definition
PE = 1/2 QV = 1/2 CV2 = 1/2 Q2/C
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