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Oefening 1
Oefening 2V = 60V – 18V – 12V = 30V
I = V / R = 30V / 40 = 0,75A R1 = V / I =18V / 0,75A = 24 R2 = V / I = 12V / 0,75A = 16 Oefening 3
- Meter 2 = de ampèremeter
I = V / R = V/RV = 12V / 8 = 1,5A
- Meter 1 = de voltmeter
V = I · R = 1,5A · 1 = 1,5V
Oefening 4
- RV = 60 + 60 + 60 + 60 = 240
- 1/RV = 1/60 + 1/60 + 1/60 + 1/60 = 4/60 = 0,067
RV = 1 / 0,067 = 15
- Rboven = Ronder = 60 + 60 = 120
1/RV = 1/120 + 1/120 = 2/120 = 0,017 RV = 1 / 0,017 = 60
- Rmidden = 60 + 60 + 120
RV = 1/120 + 1/60 + 1/60 = 5/120 = 0,042 RV = 1 / 0,042 = 24
Oefening 5Onderste tak: V = I · R = 0,18 · 50 = 9V V10 = 12V – 9V = 3V I10 = V / R = 3V / 10 = 0,3A Itot = 0,3A
Boven tak: I = 0,3A – 0,18A = 0,12A V30 = I ·
R = 0,12A · 30 = 3,6V VR = 9V – 3,6V = 5,4V
R = V / I = 5,4 / 0,12 = 45 |