finalformulas

# finalformulas - Constants e = 1 6 10 19 C m p = 1 67 10 27...

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Unformatted text preview: Constants: e = 1 . 6 10- 19 C m p = 1 . 67 10- 27 kg m e = 9 . 1 10- 31 kg o = 8 . 85 10- 12 C 2 /N m 2 1 / (4 o ) = 9 10 9 N m 2 /C 2 o = 4 10- 7 T m/A c = 3 10 8 m/s nano = 10- 9 micro = 10- 6 Coulombs Law: | ~ F | = | q 1 || q 2 | 4 o r 2 (point charge) Electric field: ~ E = ~ F q ~ E = q 4 o r 2 r (point charge) ~ E = Z dq 4 o r 2 r (general) Gauss law: E = n ~ E A = I n ~ E dA = q enc o Energy: W = Z ~ F d~ s = 1 2 mv 2 f- 1 2 mv 2 i = K f- K i For conservative forces U f- U i =- Z ~ F d~ s K i + U i = K f + U f Electric potential: V = U q V = q 4 o r (point charge) V = Z dq 4 o r (general) V b- V a =- Z b a E x dx =- Z b a ~ E d~ s E x =- V x , E y =- V y , E z =- V z Capacitors: q = CV C = o A d (parallel-plate) C = C 1 + C 2 (parallel) U E = q 2 2 C u E = 1 2 o E 2 1 C = 1 C 1 + 1 C 2 (series) Resistors: i = dq dt = jA R = V i R = L A (wire) P = iV R = R 1 + R 2 (series)...
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