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Samenvatting Elektriciteit A sessie
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Alle opgaves met antwoorden van de oefeningensessies om u zo goed mogelijk voor te bereiden op het examen fysica gegeven door Ans Baeyens. Biomedische wetenschappen
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OEFENINGEN FYSICAProf. Dr. A. Baeyens
1° BACHELOR BIOMEDISCHE WETENSCHAPPEN
Academiejaar 2019-2020
REEKS 6A – Elektriciteit
1) Wat zijn de grootte en de richting van het elektrisch veld in het centrum van het
vierkant in de onderstaande figuur als q = 1,0x10-8 C en a = 5,0 cm?
(E = 0,10 x 106 N/C en wijst verticaal naar boven)
+q -2q
a
-q +2q
2) Hoe groot is de potentiaal op 0,75 . 10-10 m van een proton (q = 1,6 . 10-19 C)?
(19,2 V)
3) In onderstaand schema loopt door de weerstand R5 een stroom van 0.5 A. Hoeveel
bedraagt de spanning van de ideale spanningsbron? (17,50 V)
, 4) Op t=0 wordt de schakelaar S gesloten.
a) Bepaal de stroom door R1 en R2 als de schakelaar gesloten wordt en lange tijd
later. (i1 = 0,05 A; i2 = 0 A; i1 = i2 = 0,025 A)
b) Hoe verloopt de spanning over C2 vanaf t = 0? Bepaal de begin- en
eindwaarde. (VC2 = 0 V; VC2 = 1 V)
c) Schakelaar S wordt geopend. Bepaal de stroom door R1 en R2 op dit ogenblik.
(i1 = 0 A; i2 = 0,025 A)
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