elektra Flashcards

(39 cards)

1
Q

atomas

A

maziausia dalele. ji sudaro branduolys ir elektronai

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2
Q

branduolio daleles

A

nukleonai (protonai ir neutronai)

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3
Q

protonu mase

A

1,6 • 10^-19 [C]

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4
Q

neutronu mase yra > = < protonu?

A

didesne (>) uz protonu

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5
Q

elektronu mase

A

1,6 • 10^-19 [C]

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6
Q

trinant kunai visada

A

isielektrina priesingu kruviu ir vienodu moduliu

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7
Q

laidininkai

A

praleidzia elektra (metalas, vanduo, anglus, grafitas)

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8
Q

dielektrikai (izoliatoriai)

A

nepraleidzia elektros (popierius, stiklas, plastikas, mediena)

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9
Q

kunai ielektrinami kai

A

trinami arba per atstuma

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10
Q

ielektrinant vaiksto

A

tik elektronai (nes p+ - branduoly)

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11
Q

elementarusis kruvis

A

elektros kruvis

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12
Q

elektrinis laukas

A

erdve apie judanti arba nejudanti kruvi. jis leidzia dalelems saveikauti

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13
Q

elektrinio lauko savybes

A

egzistuoja nepriklausomai nuo musu ziniu apie ji, lauka galima aptikti, ji galima pavaizduoti

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14
Q

vaizduojant elektrini lauka

A

linijos negali susikirsti

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15
Q

elektroskopas

A

prietaisas, kuris rodo kuno kruvi bet nerodo kruvio zenklo

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16
Q

elektros srove

A

tai yra kryptingas elektronu judejimas (is - i +)

17
Q

kas kuria elektrini lauka grandineje

A

sroves saltinis

18
Q

elektrovaros jegos saltiniuose

A

stumdomi + su + ir - su -

19
Q

elektrinis laukas stumdo

A

elektronus prie protonu

20
Q

kad teketu srove reikia

A

uzdaros grandines

21
Q

elektrine jega matuojama

22
Q

elektros sroves poveikiai

A

magnetinis (visiem), siluminis, cheminis

23
Q

2 • n^2

A

kaip daugeja elektronu skaicius aplink branduoli

24
Q

elektros srove tekanti neuzdara grandine

A

trumpalaike srove

25
e laukas atsiranda del
elektrovaros jegos
26
itampa apibudina
saltinio elektrini lauka
27
itampa lygi
elektrinio lauko darbui ir jo kruvio santykiui
28
1V lygus
1J/1C
29
elektrine varza
medziagos savybe priesintis elektros srovei
30
kiek kartu padideja laidininko itampa
tiek kartu sustripreja juo tekanti srove
31
nuo ko priklauso varza
ilgio, medziagos, pavirsiau ploto
32
ar R priklauso nuo U ar I?
nepriklauso
33
kuo mazesne varza
tuo geriau naudojimui
34
I=
I2=I3
35
U=
U1 + U2
36
R =
R1 + R2
37
kuo laidas plonesnis
tuo varza didesne
38
kuo laidas ilgesnis
tuo varza didesne
39
elektrovaros jega lygi
bendrai itampai