1. Xisaabi baaxadda iyo jihada goobta korantada barta A oo ku taal 5 cm laga bilaabo dallacaadda dhibicda Q = + 10 μC. k = 9 x 109 Nm2C-2, 1 μC = 10-6 C)
La yaqaan:
Kharashka korontada (Q) = + 10 μC = + 10 x 10-6 C
The masaafada inta u dhaxaysa barta A iyo barta dallacaadda Q (r)A) = 5 cm = 0.05 m = 5 x 10-2 m
k = 9 x 109 Nm2C-2
SE buska: Baaxadda iyo jihada korontada barta A
Xalka:
Jihada garoonka korontada ee barta A:
Dareeraha korontadu waa mid togan sidaa darteed jihada goobta korontadu waxay ka fog tahay dareeraha korontada iyo dhibcaha A.
2. Xisaabi baaxadda iyo jihada goobta korontada ee barta P oo ku taal 10 cm laga bilaabo dallacaadda dhibicda Q = -20 μC. k = 9 x 109 Nm2C-2, 1 μC = 10-6 C.
La yaqaan:
Kharashka korontada (q) = -20 μC = -20 x 10-6 C
Masaafada u dhaxaysa barta P iyo dallacaadda korantada (r)P) = 10 cm = 0.1 m = 1 x 10-1 m
k = 9 x 109 Nm2C-2
SE buska: Cabbirka iyo jihada goobta korantada ee barta P
Xalka:
Jihada garoonka korontada ee barta A:
Dareeraha korontadu waa taban sidaas darteed jihada garoonka korontadu u jeedo dareeraha korontadu waa taban.
3. Laba dalac oo dhibco ah ayaa kala fogaada masaafada 40 cm. Waa maxay baaxadda iyo jihada goobta korontada ee barta P ee u dhaxaysa labada dalac oo ah 20 cm u jirta barta A?
La yaqaan:
Dalac A (q)A) = -2 μC = -2 x 10-6 C
Dalac B (q)B) = +4 μC = +4 x 10-6 C
Masaafada u dhaxaysa dallacaadda A iyo barta P (r)AP) = 20 cm = 0.2 m = 2 x 10-1 m
Masaafada u dhaxaysa dallacaadda B iyo barta P (r)BP) = 20 cm = 0.2 m = 2 x 10-1 m
La doonayo: Cabbirka iyo jihada goobta korantada ee barta P.
Xalka:
Kharash A waa taban sidaa darteed jihada dhibcaha goobta korantada waxay u socotaa QA (bidixda).
Kharash B waa mid togan si jihada dhibcaha goobta korontada ay uga fogaato QB (bidixda).
Wadarta garoon koronto ee barta A:
E = EA +EB
E = (4.5 x 105) + (9 x 105)
E = 13.5 x 105 N / C
Jihada garoonka korontada ayaa u jeedda dhanka QA (bidixda).
4. Baaxadda goobta korontada waa eber marka loo eego...
Kharash A waa togan yahay, kharash B-na waa togan yahay si baaxadda goobta korontada loogu dhigo eber. barta P, labada dacwadoodba.
La yaqaan:
eedayn A (q)A) = +20 μC = +20 x 10-6 C
eedayn B (q)B) = +40 μC = +40 x 10-6 C
k = 9 x 109 Nm2C-2
Masaafada u dhaxaysa khidmadaha A iyo kharashka B = 20 cm
Kharashka u dhexeeya kharashka A iyo dhibicda P (rAP) = a
Masaafada u dhaxaysa dallacaadda B iyo barta P (rBP) = 20 – a
La doonayo: Baaxadda goobta korontada ku shaqeysa waa eber oo ku taal….
Xalka:
Baaxadda goobta korantada ee ay soo saarto dallacaadda A barta P
Dalacaadda A waa mid togan si jihada meelaha korontada laga helo ay uga fogaato dalacaadda A (midigta).
Baaxadda goobta korantada ee ay soo saarto dallacaadda B ee barta P:
Dalac B waa togan si jihada meelaha korontada laga helo ay uga fogaato dalac B (bidixda).
Wadarta garoon koronto ee barta P = 0:
Waxaan isticmaalnaa qaacidada labajibbaaran si aan u go'aamino a.
Baaxadda goobta korontada waa eber oo ku taal 8 cm laga bilaabo dallacaadda A ama 12 cm laga bilaabo dallacaadda B.
5Iyada oo ku saleysan sawirka hoose, wWaa kan qodobka P si garoonka korontada ee barta P uu eber u noqdo? (k = 9 x 109 Nm2C-2, 1 μC = 10-6 C)
Solution
To xisaabi xoogga goobta korantada ee barta P, oo la filayo barta P inay jirto kharash tijaabo oo togan. S1 waa mid togan iyo Q2 waa taban, sidaa darteed dhibicda P waa inay ku taal dhinaca midig ee Q2 ama bidixda Q1Haddii dhibicda P ay bidixda ka tahay Q1; garoon koronto oo ay soo saarto Q1 barta P waa bidix (ka fog Q)1) iyo garoon koronto oo ay soo saarto Q2 barta P ee dhanka midig (dhinaca Q1Jihada garoonka korontadu waa mid ka soo horjeeda si labada goobood ee korontadu ay isu baabi'iyaan si xoogga goobta korontadu ee barta P uu noqdo eber.
La yaqaan:
Q1 = +9 μC = +9 x 10-6 C
Q2 = -4 μC = -4 x 10-6 C
k = 9 x 109 Nm2C-2
Masaafada u dhaxaysa dallacaadda 1 iyo dallacaadda 2 = 3 cm
Masaafada u dhaxaysa Q1 iyo dhibic P (r)1P) = a
Masaafada u dhaxaysa Q2 iyo dhibic P (r)2P) = 3 + a
La doonayo: goobta barta P si goobta korantada ee barta P waa eber
Xalka:
PBarta P waxay ku taal bidixda Q1.
Goobta korontada ee uu soo saaray Q1 barta P:
Kharashka baaritaanka waa mid togan iyo Q1 waa mid togan si jihada garoon koronto ay u noqoto dhanka bidix.
Goobta korontada ee uu soo saaray Q2 barta P:
Kharashka baaritaanka waa mid togan iyo Q2 waa taban si jihada garoon koronto ay u noqoto midig.
Garoon koronto oo saafi ah oo ku yaal barta A:
Isticmaal qaacidada labajibbaaran si aad u go'aamiso:
a = -1.25, b = -13.5, c = -20.25
Masaafada u dhaxaysa Q2 iyo dhibic P (r)2P) = 3 + a = 3 – 1.8 = 1.2 cm.
Barta P waxay ku taal 1.2 cm midig ee Q1.
