Elektros Srove Flashcards by Darija Vai

Elektros srove

Kryptingas elektringuju daleleiu judejimas. Elektros sroves kryptis laikoma is + i -

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Elektros sroves kryptis

Tai fizikinis dydis parodantis, kokio dydzio elektros kruvis laidininke pernesama per 1 s.

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Ampermetras

Matuoja elektros sroves stipri

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I zymima

Elektros sroves stipris A(amperais) (C/s)

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T zymimas

Laikas (s)

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q zymimas

Elektros kruvis C(kulonais)

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Elektros kruvio radimo formule

q=n•e

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n zymimas

Elektronu skaicius

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e zymimas

Elementarusis skaicius 1,602 × 10‐¹⁹C

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Elektrine itampa

Tai fizikinis dydis parodantis, koki darba atliko elektrinio lauko jegos perkeldamos 1C kulonos kruvio

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Kas matuojama voltometru

Itampa, jungiamas lygegriaciai

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U zymima

Itampa V(voltais)

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Darbas, J

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Varza

Tai laidininko savybe priesintis elektros tekejimui. Laidininko varza priklauso nuo medziagos, kaido ilgio ir storio

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Ommetras

Varzos matavimo vienetas

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Varža (kazkokia idomi U)

Varza matuojama

Omais

Savitojo varza

Laidininko ilgis, m

Plotas mm

Omo desnis

I=u
—
R

Ka matuoja omo desnis

Varza

Kaip apskaiciuoti itampa

U = A÷q

Kada yra varza

Atomai trugdo judeti elektronams

Kaip apskaiciuoti sroves stirpi

I=q:t

F zymima

Jega

E zymimas

Elektros laukas

elektrono kruvis

1,6•10-¹⁹C

Ommetras

Matuoja elektros varza

Reostatas

Keiciama varza ir tokiu budu reguliuoja sroves stipri