Xoogga Elektrostatic - dhibaatooyinka iyo xalalka
1. Haddii xoogga korontada ee taagan uu yahay 144 N, waa maxay masaafada u dhaxaysa labada dallacaad ... (1 μC = 10 -6 C iyo k = 9.10 9 Nm 2 .C -2 )
La yaqaan:
Xoogga korontada (F 12 ) = 144 N
Dalac 1 (q 1 ) = 10 μC = 10 x 10 -6 C
Dalac 2 (q 2 ) = 4 μC = 4 x 10 -6 C
Joogto ah (k) = 9 x 10 9 Nm 2 .C -2
C = Coulomb, N = Newton, m = mitir
La Raadinayo: Masaafada u dhaxaysa labada kharash (r)
Xalka:
Isle'egta sharciga Coulomb :
F = xoogga korontada ee taagan, k = joogtada Coulomb, q = dallacaadda korantada, r = masaafada u dhaxaysa labada dallac
Masaafada u dhaxaysa labada dallac (r) = 5 x 10 -2 mitir = 5 x 10 -2 x 10 2 cm = 5 cm.
2. Laba dallac oo ay kala soocaan masaafada r . Haddii xoogga korontada ee taagan uu yahay 3.6 N, waa maxay masaafada u dhaxaysa labada dallac (1 μC = 10 -6 C iyo k = 9.10 9 Nm 2 .C -2 )
La yaqaan:
Xoogga korontada (F 12 ) = 3.6 N
Dalac 1 (q 1 ) = 9 μC = 9 x 10 -6 C
Dalac 2 (q 2 ) = 4 μC = 4 x 10 -6 C
Joogtada Coulomb (k) = 9 x 10 9 Nm 2 .C -2
C = Coulomb, N = Newton, m = mitir
La Raadinayo: Masaafada u dhaxaysa labada kharash (r)
Xalka:
Masaafada u dhaxaysa labada dallac (r) = 0.3 m = 0.3 x 100 cm = 30 cm.
3. Saddex dhibcood oo dallac ah sida ku cad jaantuska hoose. Waa maxay baaxadda xoogga korontada ee taagan ee barta A (k = 9.10 9 Nm 2 .C -2 ; 1 μ = 10 -6 )
La yaqaan:
eedayn A (q)A) = -2 μC = -2 x 10-6 C
Dalacaadda B (q B ) = 8 μC = 8 x 10 -6 C
Dalacaadda C (q C ) = 4,5 μC = 4,5 x 10 -6 C
Joogtada Coulomb (k) = 9 x 10 9 Nm 2 .C -2
Masaafada u dhaxaysa khidmadaha A iyo B (r AB ) = 4 cm = 4 x 10 -2 m
Masaafada u dhaxaysa dallacaadaha A iyo C (r AC ) = 3 cm = 3 x 10 -2 m
C = Coulomb, N = Newton, m = mitir
La Doonayo: Xoogga korontada ee taagan ee barta A
Xalka:
Isle'egta sharciga Coulomb:
F = xoogga korontada ee taagan , k = joogtada Coulomb , q = dallacaadda korantada , r = masaafada u dhaxaysa labada dallac
Xoogga korontada ee taagan ee barta A:
4. Dalacsiinta saddex-dhibcood sida ku cad jaantuska hoose. Waa maxay baaxadda xoogga Coulomb ee uu la kulmay Dalacsiinta B (k = 9.10 9 Nm 2 .C -2 ; 1 μC = 10 -6 C ).
La yaqaan:
q A = 10 µC = 10 x 10 -6 C = 10 -5 Coulombs
q B = 10 µC = 10 x 10 -6 = 10 -5 Coulombs
q C = 20 µC = 20 x 10 -6 = 2 x 10 -5 Coulombs
r AB = 0.1 mitir = 10 -1 m
BC = 0.1 mitir = 10 -1 m
k = 9 x 10 9 Nm 2 C −2
La Raadinayo: Ciidanka Coulomb oo ay soo martay Charge B
Xalka:
Waxaa jira laba awoodood oo coulomb ah oo ku shaqeeya dacwadda B, xoogga Coulomb ee u dhexeeya dacwadaha A iyo B (F AB ) iyo xoogga Coulomb ee u dhexeeya dacwadaha B iyo C (F BC ). Xoogga Coulomb ee ku dhaca dacwadda B waa xoogga saafiga ah ee F AB iyo F BC.
Xoogga Coulomb ee u dhexeeya dallacaadaha A iyo B:
Kharash A oo la saxiixay togan iyo kharash B oo la saxiixay togan si F AB uu u tilmaamayo kharash C.
Xoogga Coulomb ee u dhexeeya dallacaadaha B iyo C:
Kharash B wuxuu saxiixay togan iyo kharash C wuxuu saxiixay togan si F BC uu u tilmaamayo kharash A.
Ciidanka Coulomb oo uu khibrad u leeyahay darajada B:
F B = F BC – F AB = 180 – 90 = 90 N
Xoogga Coulomb ee uu la kulmo dallacaadda B (F B ) waa 90 Newtons. Jihada F B waxay la mid tahay jihada dhibcaha F BC ee dallacaadda A.
5. Go'aami baaxadda iyo jihada xoogga Coulomb ee ku jira dallacaadda B ( k = 9 x 10 9 Nm 2 C −2 , 1 μC = 10 −6 C).
La yaqaan:
Dalac A (q A ) = +Q
Dalac B (q B ) = -2Q
Dalacaadda C (q C ) = -Q
Masaafada u dhaxaysa khidmadaha A iyo B (r AB ) = r
Masaafada u dhaxaysa khidmadaha B iyo C (r BC ) = 2r
k = 9 x 10 9 Nm 2 C −2
La Raadinayo: Cabbirka iyo jihada ciidanka Coulomb ee ku jira kharashka B
Xalka:
Xoogga Coulomb ee u dhexeeya dallacaadaha A iyo B:
Kharash A waa togan yahay, kharash B-na waa taban yahay si jihada F AB ay u muujiso kharash A.
Xoogga Coulomb ee u dhexeeya dallacaadda B iyo dallacaadda C:
Kharash B waa taban, kharash C-na waa taban si jihada F BC ay u tilmaamto kharash A.
Xeerka xoogga saafiga ah ee dacwadda B:
F = FAB +FBC = 2 k Q2/r2 + 0.5 k Q2/r2 = 2.5 k Q2/r2 = 2.5 k Q2 r-2
Jihada dhibcaha xoogga si loogu dallaco A ama loo aado bidix.
