Olimpiadinis fizikos uždavinynas

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a s r n e n i n e m idso r , a n o m i sB. e i o , n u o 1 9 5 9m . t r e j u s m e t u s i 5 e i l e s u i e m u s i c m sI , I I a r b a I I I v i e t a m o k i n i a m ss u t e i k i a m a o slimpiadg l a u r e a t ov a r d a s . N r r s t a t a n tk o m a n d i n e sr a j o n q a r m i e s t 4 v i e t a s , u i k i e l < v i e n 4 I l a i p s n i o d i p l o m 4 s k a i d i u o j a n r4i t a 5 k a i ,o r r Z I I i r I I I l a i p s n i o diplomus bei pagyrimo ra5tus- atitinlu 1 + c o s r r : ) : ; : r ' r , :

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Magnetinis srautas pro rites skerspjlvi

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3. Stadiakamp6rite, suvyniota ii 1/:50 vijq, yra vienalydiame magnetiniame lauke, kurio indukcija B:0,2 T. Rites ilgis a:3 cm, plotis b:2 cm. Magnetinis laukaslygiagretusrites kra5tinems. Raskitej6gq moment4,veikiantl ritg, kai ja teka 1:4 A srove. S i u o a t v e j ur i t e g a l i b u t i n a g r i n e j a m ak a i p - Sprendimas. N atskirq rdmeliq.Jeigu rite suvyniotaviena kryptimi, kiekvienus remelius veikiantis sukimo momentas I{u:B/S

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1 . B e g a l i n i u t i e s i u l a i d u t e l < as r o r - e1 . T a i k e . - 1 .n i r i o l u s i a m e n u o S i o l a i d o r s : 5 c m a t s t u m u ,m a g n e t i n i oi a u k o i n d u k c i j aB ' : : 5 , 0 3 . 1 0 - 4 T . K o k i m a i t a u s i 4 I a i d o i i g j / n 1 na t i t i n k a S i v e r t e 2 | 6 t i k s l u m u ,k a i l a i d u t e k a t o p a t i e ss t i p r u m o s r o \ : e ,o t a i k a s , l n u t o l ' e sn u o l a i d o a t k a r p o sv i d u r i o r n : 5 c r n a t s i u m u ? Sprendimas. S a n t y k i n em a g n e t i n i ol a u l i o i n d u l i c i l o sp a klaida

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