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Fizică > Rezistenta electrica > Flashcards

Rezistenta electrica Flashcards

1
Q

Ce este rezistenta electrica

A

proprietatea conductoarelor de a-se opune treceri curentului electric

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2
Q

Cum este tensiunea la bornele unui rezistor aflat intr-un circuit daca circuitul este deschis

A

0

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3
Q

Cu cine este egala tensiunea aplicata la capetele rezsistorului?

A

raportul dintre tensiunea electrica aplicata la capetele rezistorului si intensitatea curentului electric care il strabate

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4
Q

In ce se masoara rezistenta?

A

Ohm

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5
Q

Ce este un ohm?

A

rezistenta electrica a unui rezistor care este strabatut de u curent cu intensitatea de un amper atunci cand la capetele lui se aplica o tensiune de un volt

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6
Q

Care este marimea inversa rezistentei?

A

Conductanta

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7
Q

Care este unitatea de masura a conductantei

A

Ohm la minus 1 sau Simens

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8
Q

Cum este rezistenta fata de lungime?

A

Direct proportionala

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9
Q

Cum este rezistenta fata de sectiune

A

Invers proportionala

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Fizică (9 decks)

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