CURENTUL ELECRTIC Flashcards

1
Q

curent ele format din

A

este asamblul format din generator, conductori si consumatori

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2
Q

cele 2 aprti a circ el

A

circ int (din int generat)
circ ext

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3
Q

curent el

A

miscarea dirijata a sarcinilor el

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4
Q

curent el formula

A

I = Q/Δt (in amper- A)
Q - intensit curent el (in coulombi)

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5
Q

intens curent el este

A

cantitatea de sarcina el ce trece prin sectiunea transversala a unui conductor in unit de timp

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6
Q

formula intensit cur el

A

I=q/Δt

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7
Q

intensITATEA el se masoara cu

A

AMPERMETRUL

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8
Q

la int curent el, aspectil se leaga in

A

SERIE

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9
Q

tensiunea circ int

A

u
Lm necesar pt a transporta unitatea de sarcina el prin circ int
u = L int/ q

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10
Q

tensiunea circ ext

A

U
Lm necesar pt a transporta unitatea de sarcina el prin circ ext
U = L ext/q

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11
Q

Tensiunea electromotoare

A

E
Lm necesar pt a transp sarcina el elem pt intreguuuuul circ
E = L/q

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12
Q

L=Lext+Lint /:q =>

A

E = U+u

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13
Q

rezisTenȚa el

A

propiet corpurilor de a se OPUNE trecerii curent el prin ele

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14
Q

rezstenta el formula

A

Rt = R + r

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15
Q

dependenta rezist el de dimensiunile conductorului

A

rezist el e
- d.p. cu lung conductorului
- i.p. cu sectiunea transversala a conduc
- depinde de materialul din care e facut conductorul , prin rezistivitate

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16
Q

REZISTIVITATEA E cst de material

A

ρ=rezistivit
R =ρ* l/S

17
Q

REZISTENTA se masoara in

A

OHM
[R]si= 1 Ω

18
Q

gruparea in serie

A

I=cst
IRs=I1R1+I2*R2
Rs= R1+R2+R3+…+Rn
Rs= rezistenta echiv la legarea in serie

19
Q

gruparea in paralel

A

I=I1+I2+I3+…+In
1/Rp=Uab/R1+…
1 1 1
– = —- +…+ —
Rp R1 Rn