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Listrik Statis

PPT tentang listrik Statis

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Listrik Statis

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  1. LISTRIK STATIS MUATAN LISTRIK - + -q +q muatannegatip muatanpositip

  2. + - NETRAL Banyaknyamuatanpositipsamabanyaknyamuatannegatip

  3. Q1 Q2 F = k ----------- r2

  4. F = gaya Coulomb (Newton) k = konstanta gaya Coulomb = 9 x 109 NC2m-2 Q1 = muatan listrik 1 (Coulomb) Q2 = muatan listrik 2 (Coulomb) r2 = jarak antara kedua muatan (m)

  5. GAYA COULOMB + + + TARIK MENARIK q1 q1 q1 F12 F21 ­- ­- ­- TOLAK MENOLAK F12 F21 q2 q2 q2 TOLAK MENOLAK F12 F21

  6. F21 = F21 F12 F12 kQ1 Q2 kQ2 Q1 = ---------------- =-------------------- (r12)2 (r21)2

  7. RESULTAN GAYA COULOMB + + ­- q1 q2 q3 F12 F13 F23 F31 F31 F32 F32 F21 F21 F1 = F13 -- F12 F2 = + F23 F3 = +

  8. angka-angkapengikutsatuan T = tera = 1000000000000 G = giga = 1000000000 M = mega = 1000000 K = kilo = 1000 m = mili = 0,001 µ = mikro = 0,000001 n = nano = 0,000000001 p = piko = 0,000000000001

  9. Latihansoal no. 1 + 30 cm -- q1 = 2 µC q2 = -3 µC Gambarkanarahgaya Coulomb yang terjadi Berapagaya Coulomb yang terjadiantarakeduamuatantersebut

  10. Penyelesaiansoal no. 1 F12 F21 + a. -- q1 = 2 µC q2 = -3 µC

  11. . Diketahui ditanya Gaya coulomb = ? b. R12 = 30 cm = 0,3 m q1 = 2 µC = 2 x 10-6 C q2 = -3 µC = -3 x 10-6 C

  12. R12 = 30 cm = 0,3 m Jawab q1 = 2 µC = 2 x 10-6 C q2 = -3 µC = -3 x 10-6 C kq1 q2 F12 =---------------- (r12)2 9 x 109 x 2 x 10-6x 3 x 10-6 =------------------------------------- (0,3)2 9 x 109 x 6 x 10-12 =------------------------ 0,09 = 6 x 10-1 N

  13. Latihansoal no. 2 + + -- 10 cm 20 cm q1 = 1 µC q2 = 2 µC q3 = -2 µC a. Berapabesargaya Coulomb yang terjadipadamuatan q1 b. Berapabesargaya Coulomb yang terjadi pada muatan q2 c. Berapabesargaya Coulomb yang terjadipadamuatan q3

  14. Penyelesaian Gambargayapadamasing-masingmuatan + + ­- q1 q2 q3 F13 F23 F31 F31 F12 F12 F21 F21 F32 F32 F1 = F12 -- F13 F2 = + F23 F3 = +

  15. Diketahui ditanya F1 = ? F2 = ? F3 = ? R12 = 10 cm = 0,1 m R23 = 20 cm = 0,2 m R13 = 30 cm = 0,3 m q1 = 1 µC = 1 x 10-6 C q2 = 2 µC = 2 x 10-6 C tanda negatip tidak perlu diikutkan dalam perhitungan q3 = -2 µC = -2 x 10-6 C

  16. Jawab a. kq1 q2 F12 =---------------- (r12)2 9 x 109 x 1 x 10-6x 2 x 10-6 =------------------------------------- (0,1)2 9 x 109 x 2 x 10-12 =------------------------ 0,01 = 18 x 10-1 N

  17. kq1 q3 F13 =---------------- (r13)2 9 x 109 x 1 x 10-6x 2 x 10-6 =------------------------------------- (0,3)2 9 x 109 x 2 x 10-12 =------------------------ 0,09 F13 = 2 x 10-1 N F1 F12-- F13 = 16 x 10-1 N 2 x 10-1 N = 18 x 10-1 N-- =

  18. b. kq2q3 F23 =---------------- (r23)2 9 x 109 x 2x 10-6x 2 x 10-6 =------------------------------------- (0,2)2 9 x 109 x 4x 10-12 =------------------------ 0,04 F23 = 9x 10-1 N F21 = F12 F2 F21+ F23 = 27x 10-1 N 9x 10-1 N = 18 x 10-1 N+ =

  19. c. kq3q1 F31 =---------------- (r31)2 F13= F31 = 2 x 10-1 N kq3q2 F32 =------------------------ (r32)2 F23 F23 = F3 F31+ F32 = 27x 10-1 N 9x 10-1 N = 18 x 10-1 N+ =

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