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natuurkunde h 6,7,10,11

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by

Marijn Ouwerkerk

on 13 March 2016

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Transcript of natuurkunde h 6,7,10,11

h6 electriciteit
electriciteits verbruik berekeken: E = P x t
E = opgenomen elektrische energie in joule (J)
P = vermogen dat het apparaat verbruikt in watt (W)
t = tijd dat het apparaat wordt gebruikt in seconde (s)
symbolen
elektriciteit
weerstand = R in ohm
spanning = U in volt V
stroomsterkte = I in ampere A
vermogen = p in watt W
weerstand
formule = R = U : I

U = spanning in volt V
I = stroomsterkte in ampere A
R = weerstand in ohm

voorbeeld:
gegevens U = 12 volt
R = 100 ohm
I = .....

U = I x R (12 = I x 100)
I = 12 : 100 = o,12 A = 120mA
antwoord = 120mA
natuurkunde h 6,7,10,11
regelbare gelijkspanningsbron
serie en paralell

schema om u r i uit te rekenen
Ut 4.5 v Rt 15 ohm It 0,30 A
U1 2 v R1 16,7 ohm I1 0,30 A
U2 2.5 v R2 8,3 ohm I2 0,30 A

R=U:I = R=4,5:0,30 R=15 ohm
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