CURENT alternativ Flashcards

i-intensitatea variaza

1
Q

i in c.a.

A

intensitatea variaza

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2
Q

tensiunea pe rezistor
formula si unit de masura

A

u = i * R
[u]= 1 V

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3
Q

i
unitatea de masura

A

intensitatea
[i]= 1 A

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4
Q

R

A

rezistenta
[R]= 1 Ω

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5
Q

B

A

inductia
[B]= 1 T (tesla)

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6
Q

Φ

A

flux magnetic
[Φ ]=1 Wb/m²

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7
Q

Φ formula

A

Φ =BScos α

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8
Q

i-formula

A

i=Imax*sin( ωt-φ )

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9
Q

e

A

tensiunea electro-motoare indusa

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10
Q

e formula

A

e = - ΔΦ/Δt
cu minus!

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11
Q

e formula cu delta f mic = d

A

e = -BS d(cos ωt)/dt
e= +B
Sωsinωt
e= Emax * sinωt

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12
Q

E max formula

A

Emax= BSω

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