Amandla kagesi kumqhubi webhola - izinkinga nezixazululo
1. Umqhubi webhola elingenalutho ongu-4-μC une-radius engu-8-cm. Thola amandla kagesi ebusweni bebhola. (k = 9.10 9 Nm 2 .C -2 )
Kwaziwa:
The imali kagesi (Q) = 4 μC = 4 x 10-6 C 
Irediyasi yebhola (r) = 8 cm = 8 x 10 -2 m
I-coulomb's constant (k) = 9.10 9 Nm 2 .C -2
Okufunwayo: Amandla kagesi ebusweni bebhola (V)
Isixazululo:
V = k Q / r
V = (9 x 10 9 )(4 x 10 -6 ) / (8 x 10 -2 )
V = (36 x 10 3 ) / (8 x 10 -2 )
V = (36/8) x 10 3 x 10 2
V = 4.5 x 10 5 Volt
2. Umqhubi oyindilinga unerediyasi engu- 3-cm (1 μC = 10 -6 C kanye no-k = 9.10 9 Nm 2 .C -2 ). Uma umqhubi eshajwe kahle +1 μC khona-ke amandla kagesi endaweni A …
Isixazululo:
Amandla kagesi ngaphakathi komqhubi oyindilinga = Amandla kagesi ebusweni bomqhubi oyindilinga.
Kwaziwa:
Ishaja kagesi (Q) = 1 μC = 1 x 10-6 C 
Irediyasi yomqhubi oyindilinga (r) = 3 cm = 3 x 10 -2 m
I-coulomb's constant (k) = 9.10 9 Nm 2 .C -2
Okufunwayo: Amandla kagesi endaweni A (V)
Isixazululo:
V = k Q / r
V = (9 x 10 9 )(1 x 10 -6 ) / (3 x 10 -2 )
V = (9 x 10 3 ) / (3 x 10 -2 )
V = (9/3) x 10 3 x 10 2
V = 3 x 10 5 Volt
3. Ibhola lensimbi elingenalutho elinobubanzi obungu - 9-cm lineshaja kagesi engu-6.4 x 10 -9 Coulomb, njengoba kuboniswe esithombeni esingezansi. Ibanga phakathi kwephuzu O nephuzu P = 4 cm; Ibanga phakathi kwephuzu P nephuzu Q = 5 cm; Ibanga phakathi kwephuzu Q nephuzu R = 18 cm kanye no-k = 9.10 9 Nm 2 .C -2 . Thola amandla kagesi endaweni P.
Isixazululo
Amandla kagesi ngaphakathi komqhubi oyindilinga = Amandla kagesi ebusweni bomqhubi oyindilinga.
Kwaziwa:
Ishaja kagesi (Q) = 6.4 x 10-9 C
Irediyasi yomqhubi oyindilinga (r) = OP + PQ = 4 cm + 5 cm = 9 cm = 9 x 10 -2 m
I-coulomb's constant (k) = 9.10 9 Nm 2 .C -2
Okufunwayo: Amandla kagesi endaweni P (V)
Isixazululo:
V = k Q / r
V = (9 x 10 9 )(6,4 x 10 -9 ) / (9 x 10 -2 )
V = 10 9 (6,4 x 10 -9 ) / 10 -2
V = 6.4 / 10 -2
V = 6.4 x 10 2
V = 6.4 x 100
V = 640 Volt
1. Umbuzo: Iyini i-electrical potential?
Impendulo: Amandla kagesi amandla kagesi amandla kagesi ngeyunithi ngayinye yokushaja endaweni ethile esikhaleni.
2. Umbuzo: Amandla kagesi ebusweni bebhola eliqhubayo anqunywa kanjani?
Impendulo: Amandla kagesi ebusweni bebhola eliqhubayo ayalingana futhi anikezwa yifomula V = kQ/R, lapho u-Q kuyishaja ebholeni kanti u-R iyirediyasi yalo.
3. Umbuzo: Kungani amandla kagesi engaguquki yonke indawo ebusweni bebhola eliqhutshwayo elishajelwe?
Impendulo: Ama-conductor asebenza ngokulinganayo kwe-electrostatic anensimu kagesi eqondile ebusweni. Ngakho-ke, akukho msebenzi owenziwayo ekuhambiseni ishaja ebusweni, okugcina amandla engaguquki.
4. Umbuzo: Amandla ahlukahluka kanjani ngaphakathi kwebhola lokuqondisa?
Impendulo: Ngaphakathi kwebhola lokuqhuba elishajeke ngokulinganayo, amandla kagesi ayahlukahluka, kodwa uma kwenzeka ibhola lokuqhuba elingenalutho, amandla ahlala engaguquki ngaphakathi futhi alingana namandla angaphezulu kwalo.
5. Umbuzo: Usayizi webhola eliqhubayo uthinta kanjani amandla alo aphezulu, uma ubheka ukushaja okungaguquki?
Impendulo: Ibhola elikhulu (u-R omkhulu) lizoba namandla amancane obuso beshaja ethile u-Q, ngokusekelwe kufomula u-V = kQ/R.
6. Umbuzo: Amandla kagesi ahlobene kanjani nensimu kagesi?
Impendulo: Amandla kagesi kanye nensimu kagesi kuhlobene ngesibalo u-E = -dV/dr, lapho i-dV ingushintsho kumandla kanye no-dr kungushintsho endaweni.
7. Umbuzo: Kungani singenalo insimu kagesi ngaphakathi kwebhola eliqhubayo ku-electrostatic equilibrium?
Impendulo: Ama-electron ku-conductor ahamba aze akhansele noma yiziphi izinkambu zikagesi zangaphandle. Uma sekufinyelelwe ukulingana, insimu kagesi ngaphakathi ku-conductor iba yi-zero.
8. Umbuzo: Bekungenzekani ngamandla kagesi ebhola eliqhubayo uma inani lokushaja elikulo liphindwe kabili?
Impendulo: Ukuphinda kabili ishaja Q kuzophinda kabili amandla kagesi u-V, uma kubhekwa ubudlelwano u-V = kQ/R.
9. Umbuzo: Lisho ukuthini igama elithi 'k' efomini yamandla kagesi?
Impendulo: 'k' iwuphawu oluhlala njalo lukaCoulomb, olucishe lube ngu-8.99 x 10⁹ N.m²/C² ku-vacuum.
10. Umbuzo: Amandla kagesi ahlukile kanjani kumandla kagesi?
Impendulo: Amandla kagesi angamandla kagesi angamandla okushaja ngenxa yendawo yawo ensimini kagesi, kuyilapho amandla kagesi angamandla kagesi angamandla kagesi ngeyunithi ngayinye yokushaja.
11. Umbuzo: Ingabe ibhola lokuqhuba elishajiwe lithinta amandla kagesi ezinto eziseduze?
Impendulo: Yebo, noma iyiphi into eshajiwe idala insimu kagesi endaweni ezungezile, okuthinta amandla kagesi ezinto eziseduze.
12. Umbuzo: Ibalwa kanjani i-electrical potential endaweni eseduze nebhola lokuqhuba elishajiwe?
Impendulo: Kubalwa kusetshenziswa ifomula ethi V = kQ/r, lapho u-r ibanga elisuka enkabeni yebhola liye ephuzwini.
13. Umbuzo: Uma amabhola amabili okuqhuba afanayo, elinye lishajwe kanye nelinye lingashajwanga, ehlanganiswa bese ehlukaniswa, kwenzekani ngamandla alo ngalinye?
Impendulo: Ishaja izosabalala ngokulinganayo phakathi kwamabhola amabili, okwenza amandla awo afane.
14. Umbuzo: Iyini indima yenqubo yokumisa ibhola ekuthinteni amandla ebhola eliqhuba ibhola?
Impendulo: Ukubeka umqhubi phansi kuyivumela ukuthi ishintshe ishaja noMhlaba kuze kube yilapho amandla ayo eba yi-zero.
15. Umbuzo: Kungani amandla kagesi e-zero ngaphakathi kwebhola eliqhutshwa phansi?
Impendulo: Uma iphansi, umqhubi ushintshana ngamashaji noMhlaba kuze kube yilapho insimu kagesi engaphakathi kwawo ingasebenzi, okwenza u-zero ongaba khona.
16. Umbuzo: Ingabe ukuma komqhubi kuthinta amandla ayo aphezulu?
Impendulo: Ngokushaja okunikeziwe, ukusatshalaliswa kungahluka ngesimo, kodwa ekulinganisweni kwe-electrostatic, amandla ahlala engaguquki ebusweni banoma yimuphi umqhubi.
17. Umbuzo: Ukusatshalaliswa kweshaja kuhluka kanjani kumqhubi ongeyona i-spherical?
Impendulo: Kumqhubi ongeyona i-spherical, ishaja ivame ukuqongelela kakhulu ezindaweni ezibukhali noma emaphethelweni ngenxa yokugcwala kwemigqa kagesi.
18. Umbuzo: Kungani izinyoni zingahlala ezintanjeni zikagesi ezinamandla aphezulu ngaphandle kokushaywa ugesi?
Impendulo: Izinyoni azishaywa ugesi ngoba aziqedi isekethe. Amandla kagesi ahlala njalo emzimbeni wazo wonke njengoba zithinta ucingo olulodwa kuphela, ngakho-ke akukho mehluko okhona.
19. Umbuzo: Ukuba khona kwezinto ezisebenzisa ugesi eduze kwebhola lokuqhuba elishajelwe kuthinta kanjani amandla alo kagesi?
Impendulo: Izinto ze-dielectric zithinta insimu kagesi eduze komqhubi, okungathonya amandla. Ngokuvamile, ama-dielectric anciphisa insimu kagesi esebenzayo.
20. Umbuzo: Iyini amandla kagesi endaweni ethile ekude kakhulu nebhola lokuqhuba elishajelwe?
Impendulo: Amandla kagesi asondela ku-zero njengoba umuntu ehamba kude kakhulu nomthombo oshajiwe.
Ukuqonda izici zamandla kagesi, ikakhulukazi ngama-conductor afana namabhola, kunikeza ukuqonda ngezimo eziningi kuma-electrostatics kanye nezinhlelo zokusebenza zangempela.
