009
De spanning U over de spoel is ongeveer gelijk aan:
a 71 V
b 50 V
c 38 V
d 20 V
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2πf = 200000 rad/s
f = ral / 2π
f = 200000 / 2π = 31.8 Khz
Xl = 2πfL = 2π x 31.8exp3 x 20exp-6 = 4 Ohm
Z = √ R2 + X2
Z = √ 42 + 42 = 5.66 Ohm
I = U / Z = 100 / 5.6 = 17.66 A
Ur = Ir x R = 17.66 x 4 = 70.6 V
Ul = IL x XL = 17.66 x 4 =70.6 V
KORT
XL = 2πfL = 200000 x 20exp-6 = 4 Ohm
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