029
De weerstand dissipeert het grootste vermogen bij een frequentie van:
a 500 / π Hz
b 1000 / π Hz
c 1000.π Hz
d 2000.π Hz
f.res = 1 / [2*pi* Ѵ (L*C)]
┘
Z = Ѵ R2 + Xc2
500/pi = 159 Hz XL = 2pifL = 2 x 3.14 x 159 x 0.5 = 500 ohm
Xc = 1/ 2pifC = 1/ 2 x 3,14 x 159 x 2exp-6 = 500 ohm
Z = 10 ohm
1000/pi = 318 Hz XL = 2.pi.f.L = 998 ohm
Xc = 1/ 2.pi.f.C = 250 ohm
Z = √ R2 + Xc2 = √ 102 +(998-250)2 = 750 ohm
1000.pi = 3140 Hz XL = 2.pi.f.L = 9.8 K-ohm
Xc = 1/ 2.pi.f.C = 25 ohm
Z = √ R2 + Xc2 = √ 102 + (9.8exp3 -25)2 = 10 ohm
2000.pi = 6280 Hz XL = 2.pi.f.L = 19.7 K-ohm
Xc = 1/ 2.pi.f.C = 12.5 ohm
Z = √ R2 + Xc2 = √ 102 + (19.7exp3 +12.5)2 = 20 ohm
┘