110502-opp - Physics 122 1 Physics 122 2 E V Physics 122...

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Unformatted text preview: 5/2/11 Physics 122 1 5/2/11 Physics 122 2 E + + + + + + + V 4/29/11 Physics 122 – – – – – – – 0 4 L E + + + + + + + – – – – – – – ΔV 5/2/11 Physics 122 7 ΔV = E Δx = EL Q E = 4π kC σ = 4π kC A ⎛A⎞ ⇒ Q=⎜ ⎟E ⎝ 4π kC ⎠ ⎛A⎞ Q=⎜ ⎟ ΔV ⎝ 4π kC L ⎠ 4 kc is often written as “1/ Q = CΔV What does this 5/2/11 “Q” stand for? Physics 122 8 0” 1 Farad = 1 Coulomb/Volt 5/2/11 Physics 122 9 Q = CΔV 5/2/11 Physics 122 10 Energy stored in a capacitor = 1 QΔV = 1 C ( ΔV ) 2 2 5/2/11 Physics 122 2 Q2 = 2C 16 5/2/11 Physics 122 17 E + + + + + + + – – – – – – – – – – – – – – + + + + + + + 0 5/2/11 Physics 122 V 18 1A C= 4 πkC d ' 5/2/11 Physics 122 19 E + + + + + + + –+ – – – – – – – –+ –+ –+ 0 Einside material 5/2/11 1 = Eif no material were there κ Physics 122 20 1σ E= κ ε0 Q E= κε 0 A +– + +– + +– + +– ⎛L⎞ ΔV = EL = ⎜ ⎟Q ⎝ κε A ⎠ 0 ε0 A C =κ L 5/2/11 +– – +– – +– – +– 0 Physics 122 21 1A C =κ 4 πkC d 5/2/11 Physics 122 22 ...
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110502-opp - Physics 122 1 Physics 122 2 E V Physics 122...

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