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Jakost magnetskog polja i magnetski tok

Jakost magnetskog polja i magnetski tok. Jakost magnetskog polja ( H ). B = H. Jedinica: A m -1. H. H. B 0 =  0 H. B =  0  r H. S cos . S. S. S. . Magnetski tok.  = BS cos .  = BS.  = 0. [Wb = T m 2 ].

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Jakost magnetskog polja i magnetski tok

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  1. Jakost magnetskog polja i magnetski tok Jakost magnetskog polja (H) B = H Jedinica: A m-1 H H B0 = 0 H B = 0 r H

  2. S cos  S S S  Magnetski tok  = BS cos   = BS  = 0 [Wb = T m2]

  3. Zadatak: Željezni prsten poprečnog presjeka 5 cm2 ima srednji • promjer 16 cm. Oko prstena ja namotano 400 namotaja kojima • teče struja jakosti 2 A. Relativna permeabilnost željeza je 500. • Izračunajte: • a) jakost magnetskog polja, • b) magnetsku indukciju u prstenu i • c) magnetski tok? Rješenje: S = 5 cm2  = 510-4 m2 a)  = 0,16 m d = 16 cm N = 400 H = 1592 A m-1 I = 2 A b) r = 500 B = 0rH = 410-7 T m A-15001592 A m-1 B = 1 T  = 510-4 Wb c)  = BS = 1 T510-4 m2

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