KuFacebook magnetic

Siyazi ukuba umqhubi yangoku-Ukuthwala ibekwe mhlaba otsalayo, ufakwa amandla. indlela yayo ixhomekeke kolwalathiso imigca endle kunye ulwalathiso ngoku; ukuba bamva baziwa, ulwalathiso amandla nga kumiselwa ngokusebenzisa ulawulo lasekhohlo okanye iqhosha lemenyu sokunene.

Ngoku makhe siqwalasele oko imisela ixabiso la mandla. Ethetha amava.

Ukunqunyanyiswa kwiphiko lasekhohlo yesitshixo lever siyaqabela yomgama umqhubi AB niyibeke phakathi izibonda N kunye S le electromagnet kangangokuba aa Incopho na ngokubhekiselele imigca zibuthe. Ngokungatshintshiyo esi sikhokelo iya kubandakanya ammeter kunye rheostat, ngazo sokukala yangoku kule nombhexeshi. Kulungiswe umonakalo, yaye le sekethe evaliwe. Vumela zangoku ngumqhubi AB wathumela ukusuka B ukuya A. I ubunzima ibhalansi ezaphukileyo; ukubuyisela, phezu indebe ekunene kuya kufuneka ukuba abeke i raznovesok eyongezelelweyo ogama lokulinganisa ulingane nomkhosi ezwi kwi kwicingo nkqo ezantsi. Siza Izakutshintsha ekhoyo ngoku umqhubi wethu; siphawula ukuba ukunyuka zangoku kunye nokwanda kwaye ungamandla enza izinto kwisithuthi. Utshintsho uya kusibonisa ukuba mandla apho lo mhlaba otsalayo enza izinto umqhubi kuba umlinganiselo ngqo yangoku eliqukuqela ngaso.

Kuxhomekeke ekubeni ngamandla ubude umqhubi AB? Ukuze kulungiswe le ngxaki, siya kuthabatha iingcingo ezibude kwindawo yangoku enye. Imilinganiselo zibonisa ukuba amandla ngayo lo mhlaba otsalayo luchaphazela umqhubi yangoku-Ukuthwala, uya bulingane ngqo ubude ngumqhubi ibekwe entsimini ngemagnethi.

Vumela F - amandla, nto leyo enza izinto umqhubi yangoku-ephethe ibekwe mhlaba otsalayo, l - ubude umqhubi mna - zangoku kuyo.

Ngenxa utshintsho ubude l we umqhubi kunye zangoku kuyo utshintsha, njengoko sele sibonile, kwaye ubukhulu amandla F.

Umlinganiselo yomkhosi F nobude kumqhubi I yangoku yaye ozimeleyo rhoqo yangoku kulo; Ngoko ke, lo umlinganiselo nga ziimpawu lo mhlaba otsalayo.

Le ubuninzi ngokuba induction Imagnethi okanye induction ngemagnethi.

Libhekisela magnetic unobumba induction B. Ngokwengcaciso, ungakwazi ukubhala:

B = F / (I · l).

I SI unit kwenkqubo magnetic induction lenza intsimi yoqheliso apho umqhubi kunye yangoku 1 A no-1 m ubude ufakwa amandla loo Igama N. 1 unit: 1 Newton / (amper˖metr) (olufinyeziweyo 1 H / (am)) .

Sibanga ukuba H 1 / (Am) = 1 (V˖sek) / m²:

1 H / (Am) = 1 (NM) / (A˖m²) = 1 J / (A˖m²) = 1 (V˖A˖sek) / (A˖m²) = 1 (V s) / m².

Unit 1 volt-yesibini ekuthiwa Weber (WI). Ngenxa yoko, 1 WB / m² okanye 1 tesla (T) - iyunithi yoqheliso ngemagnethi. Ekubeni le nkqubo yeyunithi yokulinganisa emu yoqheliso magnetic - GAUSS (G):

1 T = 10⁴ GAUSS.

induction Magnetic - esiyua nobungakanani. Ulwalathiso kumda wesangqa yoqheliso kule ngongoma kuvisisaniswe ulwalathiso lwelayini amandla magnetic odlula kule ngongoma.

I SI ekubhobhozeni magnetic mninzi - ngemagnethi amandla intsimi Uphawu, ezifana nendlela endle yombane ichaza amandla uphawu yasendle yombane.

Ukwazi kuFacebook zibuthe, kunokwenzeka ukuba ukubala umfutho ngumqhubi yangoku-Ukuthwala ngokomgaqo wokubala:

F = BI l.

Xa umqhubi yangoku-Ukuthwala iintlawulo nje ukuhamba ngokungakhethiyo kumacala ahlukeneyo, kodwa indlela ethile. Ngalinye isigxina echaphazela amandla nosiba ezidluliselwa ukuya kumqhubi. Umdibaniso yonke imikhosi ukusuka isindululo umbhodamo ngu zero, kwaye inani imikhosi intshukumo ngqo kuthiwa amandla Ampere.

Ngokubanzi, imali amandla aye kwi umqhubi yangoku-Ukuthwala ibekwe mhlaba otsalayo ezimiselwe ngumthetho Ampere:

F = BI l α yesono, eyone α - engile ephakathi kwicala yangoku (I) kunye kumda wesangqa Imagnethi yomhlaba (B).

magnetic yoqheliso inkundla ngamanani ulingane nomkhosi leyo echaphazela lo mhlaba otsalayo nganye kwiyunithi element yangoku elahliweyo nkqo eya kumda wesangqa yoqheliso. yoqheliso Magnetic esekelwe kwiipropati eendaba.