Electriciteit Flashcards

1
Q

Coulombkracht

A

F= k . lQl. IQ’I / r^2

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2
Q

Elektrische veldsterkte

A

E= k. Q/ r2 = F/Q’

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3
Q

Potential

A

V= k. Q/ r = Ep/Q’

Homogeen veld:

V= E. d

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4
Q

Potentiële Energie

A

Ep= k. Q. Q’/ r

Bij homogeen veld:

Ep=Q. E. d

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5
Q

Arbeid door coulombkracht

A

W= Epa-Epb

W= Q’(Va-Vb)

W= k. Q. Q’(1/ra - 1/rb)

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6
Q

kWh berekenen

A

kWh= 🔺E/3.600.000 J

1) P(=vermogen). 1= 🔺E(p is altijd per 1 s
2) 🔺E/ 3 600 000 J
of P. Δt /3600000 J

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7
Q

Stroomsterkte

A

I = Q/🔺t

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8
Q

Spanning

A

U= Va-Vb

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9
Q

Weerstand

A

R= U/I

In ohm ♎️

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10
Q

Weerstand in geleider

A

R= p.l /A

A is opp van doorsnede geleider

p is resistiviteit van een stof in ♎️. m

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11
Q

Vervanginingsweerstand in Serie

A

Rs= R+R’+…

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12
Q

Vervangingsweerstand in parrallel

A

1/Rs= 1/R + 1/R’

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13
Q

Stroomsterkte in serie

A

Is= I = I’

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14
Q

Stroomsterkte in parrallel

A

Is= I + I’

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15
Q

Spanning in een serie

A

Us= U+ U’+…

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16
Q

Spanning in Parrallel

A

Us=U=U’

17
Q

Energie omzetting

A
🔺E = U. Q
🔺E = U. I. 🔺t
18
Q

Rendement

A

En/Et. 100%= n

19
Q

Vermogen

A

P= U. I
= R. I2
= U/R2

20
Q

Energie in Warmte verlies

A

Joule effect:

W= R. I2 . 🔺t

21
Q

oppervlakte van een cirkel

A

A = π r²