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R1 = 20 Ω
R2 = 0,2 KΩ = 200Ω
R3 = 0,1 MΩ = 100000Ω
U1 = 20 mV = 0,02 V
U2 = 100V
U3 = 200V
SZUKANE:
I1 = !
I2 = ?
I3 = ?
WZÓR:
I = U/R
OBLICZENIA:
I1 = 0,02V/20Ω = 0,001A
I2 = 100V/200Ω = 0,5A
I3 = 200V/100000Ω = 0,002A
ODPOWIEDŹ:
Natężenia wynoszą 0,001A, 0,5A i 0,002A.