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Samenvatting MBO Elektrotechniek 2026 + 20 Oefenvragen - Gelijkstroom Wisselstroom Serie Parallel Installatietechniek NEN 1010 Badkamerzones NEN 3140 Veiligheid 25+ Pagina's

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Complete samenvatting MBO Elektrotechniek — 25+ pagina's met berekeningen! Elektrotechniek draait om FORMULES en VEILIGHEID. Ohm's wet, serie- en parallelschakelingen, wisselstroom, NEN 1010, badkamerzones... Deze UITGEBREIDE EDITIE behandelt alle examenstof met uitgewerkte berekeningen. Wat krijg je? 25+ pagina's — van basiselektriciteit tot NEN 1010! Uitgewerkte berekeningen: U=IR, P=UI, serie, parallel, gemengd NEN 1010: beveiligingen, aardingssystemen, badkamerzones NEN 3140: 5 veiligheidsregels, VOP/VP INHOUD: DEEL 1: Basiselektriciteit — 7 grootheden, wet van Ohm (driehoek!), vermogen + energieberekening DEEL 2: DC — serieschakeling (uitgewerkt), parallelschakeling (uitgewerkt), gemengde schakeling DEEL 3: AC — 230V/50Hz, piek vs. effectief, driefasensysteem (L1/L2/L3), kleurcodes, impedantie, cos φ DEEL 4: Installatietechniek — meterkast layout, 5 beveiligingen, aderdoorsnede tabel, 5 schakelschema's DEEL 5: NEN 1010 — direct/indirect contact bescherming, 5 aardingssystemen, badkamerzones (0-3) DEEL 6: Veiligheid — stroomgevaren (1mA→1A), NEN 3140 (5 regels), VOP/VP, EHBO elektrocutie DEEL 7: Meten — 6 meetinstrumenten, isolatiemeting (≥1MΩ)

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Samenvatting MBO Elektrotechniek — Niveau 3 & 4
2026
UITGEBREIDE EDITIE — Gelijkstroom, Wisselstroom,
Installatietechniek, NEN 1010, Veiligheid + 20 Oefenvragen
Complete Examenvoorbereiding

Versie: 2026 — UITGEBREIDE EDITIE
Geschikt voor: MBO Elektrotechniek niveau 3 & 4, Installateur, Monteur
Inhoud: Gelijkstroom + wisselstroom + installatietechniek + NEN 1010 + veiligheid + 20
oefenvragen
Omvang: 25+ pagina's


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DEEL 1: BASISELEKTRICITEIT
1.1 Grootheden
Grootheid Symbool Eenheid Beschrijving
Spanning U Volt (V) "Druk" die elektronen
duwt
Stroomsterkte I Ampère (A) Hoeveelheid lading per
seconde
Weerstand R Ohm (Ω) Hoe moeilijk stroom
doorlaat
Vermogen P Watt (W) Energieverbruik per
seconde
Energie E Joule (J) of kWh Totaal verbruik
Lading Q Coulomb (C) Hoeveelheid
elektrische lading
Frequentie f Hertz (Hz) Trillingen per seconde



1.2 Wet van Ohm — DE BELANGRIJKSTE FORMULE!
U = I × R

U (V) = spanning
I (A) = stroomsterkte
R (Ω) = weerstand

, Driehoek:
U
───
I × R

U = I × R (spanning berekenen)
I = U / R (stroom berekenen)
R = U / I (weerstand berekenen)

Voorbeeld:
Lamp met R = 100 Ω op 230 V
I = = 2,3 A


1.3 Vermogen en Energie
P = U × I (Watt)
P = I² × R (Watt)
P = U² / R (Watt)

E = P × t (Joule of Wh)

Voorbeeld:
Lamp 60 W, 5 uur aan:
E = 60 × 5 = 300 Wh = 0,3 kWh
Kosten (€0,40/kWh): 0,3 × 0,40 = €0,12




DEEL 2: GELIJKSTROOM (DC)
2.1 Serieschakeling
R₁ ─── R₂ ─── R₃ (achter elkaar)

Rtot = R₁ + R₂ + R₃
I is OVERAL gelijk
Utot = U₁ + U₂ + U₃

Voorbeeld: R₁=10Ω, R₂=20Ω, R₃=30Ω, U=120V
Rtot = 10 + 20 + 30 = 60 Ω
I = = 2 A
U₁ = 2 × 10 = 20V, U₂ = 40V, U₃ = 60V ✓ (20+40+60=120V)


2.2 Parallelschakeling
┌── R₁ ──┐
────┤── R₂ ──├──── (naast elkaar)
└── R₃ ──┘

1/Rtot = 1/R₁ + 1/R₂ + 1/R₃
U is OVERAL gelijk
Itot = I₁ + I₂ + I₃

Bij 2 weerstanden: Rtot = (R₁ × R₂) / (R₁ + R₂)

Voorbeeld: R₁=30Ω, R₂=60Ω parallel, U=120V
Rtot = (30×60)/(30+60) = 1800/90 = 20 Ω
Itot = 120/20 = 6 A
I₁ = 120/30 = 4A, I₂ = 120/60 = 2A ✓ (4+2=6A)

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