componente ale circuitului el c. a.

Question 1

componente

Answer 1

rezistor, bobina, condensator

Question 2

rezistor

Answer 2

R
se opune trecerii curent el ()si in cc si in ca)
nu introduce defazaj intre tensiune si intensitate
φ=0

desen - un dreptunghi

Question 3

rezistenta se masoara cu

Answer 3

Osciloscopul

Question 4

bobina

Answer 4

bobina parcursa de c.a. genereaza camp magnetic
in c.a. bobina=rezistor
in c.a. bobina introduce un defazaj al tensiunii inaintea intensitatii cu π /2

desen - un dreptunghi cu N- nr de spire

Question 5

bobina - L

Answer 5

L - inductanta
L = μ Ni/l
μ - permeabilitate magnetica

Question 6

in bobina μ formula

Answer 6

μ = μ *μ
0 r

μ indice 0-permeabilit magn a vidului
μ indice r - permeabil magn arelativa

Question 7

μ aer

Answer 7

μ aer -> μ r ≈ 1=> μ =μ indice 0

Question 8

reactia inductiva

Answer 8

X =ω * L
L
joaca rol de rezistenta
[X L]= 1 Ω

Question 9

ω

Answer 9

pulsatia

Question 10

condensatorul

Answer 10

condensatorul plan –de| |–
cond variabil (in desen e taiat)

Question 11

simbol curent alternativ in circuit

Answer 11

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