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samenvatting hoofstuk 4 elektrische systemen

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samenvatting hoofstuk 4 elektrische systemen

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  • July 6, 2022
  • 4
  • 2021/2022
  • Summary
  • Secondary school
  • 4
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Hoofdstuk 4 Elektrische systemen

4.1 Elektrisch vermogen
Het lichtnet heeft een spanning van 230 V.

Elektrische stroomsterkte geeft aan hoeveel elektrische lading per seconde langs een punt van een
stroomkring stroomt. Binas tabel 35 D1

I=Q/t I = de stroomsterkte in Ampère (A)
Q = de lading in Coulomb (C)
t = de tijd in seconde (s)

In een stroomkring lopen elektronen, deze hebben allemaal dezelfde lading gelijk aan het elementair
ladingsquantum e Binas tabel 7

Spanning is het lading verschil tussen twee punten per coulomb lading. Binas tabel 35 D1

U = ∆E / Q U = de spanning in volt (V)
E = het verschil in lading in joule (J)
Q = de lading in Coulomb (C)

Als je de spanning en de stroomsterkte weet, kun je berekenen hoeveel energie de ladingen per
seconde afstaan, het elektrisch vermogen Binas tabel 35 D1

P=UxI P = het vermogen in watt (W)
U = de spanning in volt (V)
I = de stroomsterkte in Ampère (A)

Rendement bereken je met




De elektrische energie bereken je met Binas tabel 35 D1

E=pxt E = elektrische energie in joule (J)
P = het vermogen in watt (W)
t = de tijd in seconde (s)



4.2 weerstand en geleidbaarheid
De weerstand is de grootheid die aangeeft hoeveel stroom er gaat lopen bij een bepaalde spanning.
Hoe kleiner de weestand hoe groter de stroomsterkte Binas tabel 35 D1

R=U/I R = de weerstand in ohm (Ω)
U = de spanning in volt (V)
I = de stroomsterkte in Ampère (A)

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