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| What is the equation for voltage in a spherical conductor if V=0 is chosen at infinity? |
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Definition
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| What is self-capacitance? |
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Definition
The amount of charge a conductor can hold at a given voltage difference C = Q/V |
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What does capacitance depend on? |
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Definition
The size, shape, and relative positions of the conductors C = Q/V = Q/(kQ/R) = R/K |
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| What is capacitance measured in? |
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Definition
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| What is the capacitance of a parallel-plate capacitor? |
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Definition
C = εoA/d A = Area of one of the plates d = distance between capacitors εo = 8.85 x 10-12 F/m |
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| What is the capacitance of a cylindrical capacitor? |
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Definition
C = 2 pi εoL ln(R2/R1) R1= Inner radius R2 = Outer radius L = length of capacitor |
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| What are the equations for the energy stored in a capacitor? |
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Definition
| U = 1/2 Q2/C = 1/2 QV = 1/2 CV2 |
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What is the energy density of an electrostatic field? |
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Definition
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