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Samenvatting Elektronica en Elektriciteit 1ste jaar BMLT

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Samenvatting Elektronica en Elektriciteit 1ste jaar BMLT

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Uploaded on
February 3, 2023
Number of pages
9
Written in
2020/2021
Type
Summary

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Groothe Grootheid Eenheid symbool Eenheid Formules Andere
id
symbool


U Spanning V Volt W
U=
Q


I Stroom A Ampère Q
I=
t


R Weerstand (resistentie)  Ohm U l=lengte geleider
R= = wet van Ohm
I
A=doorsnede geleider ( m2)
l
R=. = wet van Pouillet 2
A π .d
A=
4

Hoe groter doorsnede, hoe
kleiner weerstand


 Specifieke soortelijke m Ohm Gegeven (in tabel)  ∙ 10−6
weerstand (resistiviteit)


G Elektrische geleiding S Siemens 1
G=
(conductantie) R

Arbeid verricht door elektrische
W Arbeid J Joule W =U . I .t stroom in elektrische weerstand
wordt omgezet in warmte
(warmte) W.s = Joule effect
2 U2
W =R . I . t= .I
R
1

, kWh = kilowattuur Kilowattuur W =P. t
1 kWh = 1000W . 3600s = 3,6 . 106 J


P Vermogen W Watt P=U . I elektrische arbeid of energie
tijd
2
(hoeveelheid elektrische V.A 2 U
energie per seconde) P=I . R= . I
R


Q Elektrische lading C Coulomb = Q=I .t t in uur
Ampère seconde

Ampere uur
Ah

1 Ah = 3600 C


f Frequentie Hz Hertz

= aantal malen heen
en weer vloeien per
seconde


η rendement % Pn Pt −Pv Pt = toegevoegd
η= = . 100 % vermogen
Pt Pt
Pn = nuttige vermogen

Pv = verliesvermogen

Pt =Pn + Pv


2

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