Amandla kagesi aqinile - izinkinga nezixazululo
1. Uma amandla kagesi angaguquki angu-144 N, ibanga elingakanani phakathi kokushaja kokubili … (1 μC = 10 -6 C kanye no-k = 9.10 9 Nm 2 .C -2 )
Kwaziwa:
Amandla kagesi (F 12 ) = 144 N
Ishaja 1 (q 1 ) = 10 μC = 10 x 10 -6 C
Ishaja 2 (q 2 ) = 4 μC = 4 x 10 -6 C
Okungaguquki (k) = 9 x 10 9 Nm 2 .C -2
C = Coulomb, N = Newton, m = imitha
Okufunwayo: Ibanga phakathi kokubili ukushaja (r)
Isixazululo:
Isilinganiso somthetho kaCoulomb :
F = amandla kagesi angaguquki, k = okungaguquki kukaCoulomb, q = ishaja kagesi, r = ibanga phakathi kwamacala womabili
Ibanga phakathi kwamabili amashaja (r) = 5 x 10 -2 amamitha = 5 x 10 -2 x 10 2 cm = 5 cm.
2. Amashaja amabili ahlukaniswe yibanga lika-r . Uma amandla kagesi angaguquki engu-3.6 N, lingakanani ibanga phakathi kwamashaja womabili (1 μC = 10 -6 C kanye no -k = 9.10 9 Nm 2 .C -2 )
Kwaziwa:
Amandla kagesi (F 12 ) = 3.6 N
Ishaja 1 (q 1 ) = 9 μC = 9 x 10 -6 C
Ishaja 2 (q 2 ) = 4 μC = 4 x 10 -6 C
I-coulomb's constant (k) = 9 x 10 9 Nm 2 .C -2
C = Coulomb, N = Newton, m = imitha
Okufunwayo: Ibanga phakathi kokubili ukushaja (r)
Isixazululo:
Ibanga phakathi kwamacala womabili (r) = 0.3 m = 0.3 x 100 cm = 30 cm.
3. Amacala amathathu njengoba kuboniswe esithombeni esingezansi. Ubukhulu bamandla kagesi angaguquki endaweni A buyini (k = 9.10 9 Nm 2 .C -2 ; 1 μ = 10 -6 )
Kwaziwa:
Shaja A (q)A) = -2 μC = -2 x 10-6 C
Ishaja B (q B ) = 8 μC = 8 x 10 -6 C
Ishaja C (q C ) = 4,5 μC = 4,5 x 10 -6 C
I-coulomb 's constant (k) = 9 x 10 9 Nm 2 .C -2
Ibanga phakathi kwezindleko A kanye no-B (r AB ) = 4 cm = 4 x 10 -2 m
Ibanga phakathi kwezindleko A kanye no-C (r AC ) = 3 cm = 3 x 10 -2 m
C = Coulomb, N = Newton, m = imitha
Okufunwayo: Amandla kagesi angaguquki endaweni A
Isixazululo:
Isilinganiso somthetho kaCoulomb:
F = amandla kagesi angaguquki , k = okungaguquki kukaCoulomb , q = ishaja kagesi , r = ibanga phakathi kwamabili amashaja
Amandla kagesi angaguquki endaweni A:
4. Amashaji anamaphuzu amathathu njengoba kuboniswe esithombeni esingezansi. Ubukhulu bamandla e-Coulomb atholwe yi-Charge B (k = 9.10 9 Nm 2 .C -2 ; 1 μC = 10 -6 C ).
Kwaziwa:
q A = 10 µC = 10 x 10 -6 C = 10 -5 Ama-Coulomb
q B = 10 µC = 10 x 10 -6 = 10 -5 Ama-Coulomb
q C = 20 µC = 20 x 10 -6 = 2 x 10 -5 Ama-Coulomb
r AB = 0.1 imitha = 10 -1 m
r BC = 0.1 imitha = 10 -1 m
k = 9 x 10 9 Nm 2 C −2
Kufunwa: Amandla e-Coulomb atholwe yi-Charge B
Isixazululo:
Kunezenzo ezimbili zamandla e-coulomb ku-charge B, i-Coulomb force phakathi kwamacala A no-B (F AB ) kanye ne-Coulomb force phakathi kwamacala B no-C (F BC ). I-Coulomb force etholakala ku-charge B ingamandla aphelele e-F AB no-F BC.
Amandla e-Coulomb phakathi kwezindleko A no-B:
Inkokhelo A esayiniwe i-positive kanye nenkokhelo B esayiniwe i-positive ukuze i-F AB ikhomba ku-C.
Amandla e-Coulomb phakathi kwamacala B no-C:
Inkokhelo B isayinwe ithi ilungile kanti inkokhelo C isayinwe ithi ilungile ukuze i-F BC ikhomba ku-A.
Amandla e-Coulomb abhekene necala B:
F B = F BC – F AB = 180 – 90 = 90 N
Amandla e-Coulomb atholakala ngokushaja u-B (F B ) angama-Newton angu-90. Isiqondiso sika-F B sifana nesiqondiso samaphuzu e-F BC kuya ekushajeni u-A.
5. Nquma ubukhulu kanye nesiqondiso samandla e-Coulomb ekushajeni B ( k = 9 x 10 9 Nm 2 C −2 , 1 μC = 10 −6 C).
Kwaziwa:
Ishaja A (q A ) = +Q
Ishaja B (q B ) = -2Q
Ishaja C (q C ) = -Q
Ibanga phakathi kwezindleko A kanye no-B (r AB ) = r
Ibanga phakathi kwezindleko B kanye no-C (r BC ) = 2r
k = 9 x 10 9 Nm 2 C −2
Kufunwa: Ubukhulu kanye nesiqondiso samandla e-Coulomb ashaja u-B
Isixazululo:
Amandla e-Coulomb phakathi kwezindleko A no-B:
Ishaja A ilungile kanti ishaja B ilungile ukuze isiqondiso se- F AB sikhomba ekushajeni u-A.
Amandla e-Coulomb phakathi kweshaja B kanye neshaja C:
Ishaja B imbi kanti ishaja C imbi ukuze isiqondiso se-F BC sibhekise kushaja A.
Isenzo se-Net Force esikhokhiswayo B:
F = FAB +FBC = 2 k Q2/r2 + 0.5 k Q2/r2 = 2.5 k Q2/r2 = 2.5 k Q2 r-2
Isiqondiso samaphuzu okuphoqa ukushaja u-A noma ukuya kwesobunxele.
