Matla a khoheli induction

Rea tseba hore hona joale-e jereng mokhanni beha tšimong a khoheli, e tlas'a lebotho la ka. tataiso lona itšetlehile ka tataiso ea mela ea tšimo le tataiso ea morao-rao: haeba e qetellang li tsejoa, tataiso ea lebotho la ho ka ho ikemisetsa ka ho sebelisa le letšehali ka letsohong le puso ea kapa nsete letona.

Joale a re hlahlobeng seo etsang qeto boleng la lebotho la sena. Ha a bua ka phihlelo.

Ho fanyeha tsa mahetla le letšehali la rocker Lever sekala guttate mokhanni AB le e behe pakeng tsa lipalo N le S tsa electromagnet e le hore e ke perpendicular mabapi le ho se mela khoheli. Feto-fetohe le tataiso ena e tla akarelletsa oa ammeter le rheostat, eo ka eona u ka lekanya jwale ka mokhanni ena. Ka khotsofatsa se hlokoang, 'me balebeli ba potoloho ba e koetsoeng. A re ke re jwale ka mokhanni AB romeloa ho tloha B ho A. litekanyo The ho leka-lekana robehile; ho tsosolosa eona, ka senoelo le letona le tla lokela ho beha raznovesok eketsehileng eo boima ba 'mele o lekana le lebotho la ho ikitlaetsa ka terata e fehlang tlase. Re tla fetola jwale joale mokhanni oa rōna; re hlokomela hore le keketseho morao-rao le ho eketseha le matla a etsang hore o nka khato ka koloi. Liphetoho tla re bontša hore lebotho le eo le matla a khoheli nka khato ka mokhanni ke ka ho toba tekanyo e lekanang ya ho hona joale e phallang ka sona.

Ho itšetlehile ka hore na matla a bolelele ba mokhanni AB? Ho rarolla ka taba ena, re tla nka ka lithapo tsa bolelele bo sa tšoaneng ka morao-rao e tšoanang. The litekanyo re bontša hore lebotho le eo matla a khoheli e ama hona joale-e jereng mokhanni, e tla ba ka ho toba tekanyo e lekanang ya ho bolelele ba mokhanni teng tšimong a khoheli a.

A re ke re F - ho sebetsa, eo nka khato ka morao-rao-jereng mokhanni kenngoa ka matla a khoheli, k - bolelele ba mokhanni le ke - jwale ho eona.

Le phetoho ka bolelele k ya mokhanni le hona joale ho e fetola, joalokaha re se re bone, le boholo ba lebotho la F.

The karo-karolelano ea matla a F ho bolelele ba mokhanni jwale ke le ke ikemetseng kamehla hona joale ho eona; Ka hona, le karo-karolelano ena ka khethollang le matla a khoheli.

palo ena e bitsoa matla a khoheli induction kapa a khoheli a induction.

Bontša ho khoheli induction lengolo B. Ka tlhaloso, e mong a ka ngola:

B = F / (Ke · l).

The SI unit trust ea tsamaiso khoheli induction etsa tšimo induction oo mokhanni ka morao-rao ba 1 A le 1 limithara nako e telele e tlas'a lebotho joalo Lebitso N. 1 unit trust: 1 Newton / (amper˖metr) (khutsufalitsoe ho 1 H / ( 'na)) .

Re bolela hore H 1 / ( 'na) = 1 (V˖sek) / m²:

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

Unit 1 volt-bobeli bitsoa Weber (Wb). Ka lebaka leo, 1 Wb / m² kapa 1 tesla (T) - yuniti ya induction a khoheli a. Le hoja tsamaiso ea go lekanya emu yuniti ya induction khoheli - gauss (G):

1 T = 10⁴ gauss.

Matla a khoheli induction - vector ngata. Tataiso ea vector induction ka nako ena e tsamaiso di nyalantswe le tataiso ea lebotho la mela ea matla a khoheli ea fetang ntlha ena.

The SI khoheli ts'ebetsong segokanyipalo - khoheli a ba qobelle bath, tšoanang le kamoo ea tšimo motlakase o bontša matla a bath tsa naha motlakase.

Ho tseba induction khoheli, hoa khoneha hore motho a bale lebotho la morao-rao-e jereng mokhanni ho latela moralo o balletsweng e:

F = Bi k.

Ka morao-rao-e jereng mokhanni liqoso se feela susumelletsa lootho ka litaelo tse sa tšoaneng, empa hape le ka tsela e itseng. E mong le e ho tefo ho ama matla a khoheli a hore a fetisetsa mokhanni e. Balang ba mabotho tsohle ho tswa ho tshisinyo pherekano motseng ke lefela, 'me chelete eo ba mabotho a laela mokhatlo oa bitsoa lebotho la Ampere.

Ka kakaretso, chelete e matla eo nka khato ka morao-rao-e jereng mokhanni kenngoa ka matla a khoheli e behilweng ke molao Ampere:

F = Bi k ba etse sebe α, moo α - angle pakeng tsa tataiso jwale (I) le vector khoheli (B).

khoheli induction ke numerically lekana le lebotho la ho eo e ama matla a khoheli ka unit trust elements jwale tšekamelo perpendicular ho vector tsa induction. Matla a khoheli induction e thehiloeng thepa ea mecha ea phatlalatso.