tsl127 - vacuum dielectric charge Q Q = κQ electric field...

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Impact of Dielectric (1) What happens when a dielectric is placed into a capacitor with the charge on the capacitor kept constant? vacuum dielectric charge Q 0 Q = Q 0 electric field E 0 E = E 0 κ < E 0 voltage V 0 V = V 0 κ < V 0 capacitance C 0 = Q 0 V 0 C = Q V = κC 0 > C 0 potential energy U 0 = Q 2 0 2 C 0 U = Q 2 2 C = U 0 κ < U 0 energy density u (0) E = 1 2 ² 0 E 2 0 u E = u (0) E κ = 1 2 κ² 0 E 2 < u (0) E tsl127 – p.1/2
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Impact of Dielectric (2) What happens when a dielectric is placed into a capacitor with the voltage across the capacitor kept constant?
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Unformatted text preview: vacuum dielectric charge Q Q = κQ electric field E E = E voltage V V = V capacitance C = Q V C = Q V = κC > C potential energy U = 1 2 C V 2 U = 1 2 CV 2 = κU > U energy density u (0) E = 1 2 ² E 2 u E = κu (0) E = 1 2 κ² E 2 > u (0) E tsl128 – p.2/2...
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This note was uploaded on 04/30/2008 for the course PHYS 204 taught by Professor Andrevantonder during the Spring '07 term at Rhode Island.

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tsl127 - vacuum dielectric charge Q Q = κQ electric field...

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