Hambatan R, induktor L dan kapasitor C masing-masing mempunyai nilai 300 ohm,  0,9 henry dan 2 ìF. Jika ketiga komponen listrik tersebut dihubungkan seri dan di

Rangkaian R - L - C

R = 300 Ω
L = 0,9 H
C = 2 μC = 2 x 10⁻⁶ C
V = 50 V
ω = 1000 rad / s

a. Z = _ ?

[tex] X_{L} [/tex] = ω L
[tex] X_{L} [/tex] = 1000 • 0,9
[tex] X_{L} [/tex] = 900 Ω

[tex] X_{C} [/tex] = 1/ω C
[tex] X_{C} [/tex] = 1 / (1000 × 2 × 10⁻⁶)
[tex] X_{C} [/tex] = 500 Ω

Maka

[tex] Z = \sqrt{R^2 + (X_L - X_C)^2} \\
Z = \sqrt{300^2 + (900 - 500)^2} \\
Z = \sqrt{300^2 + 400^2} \\
Z = 500 \ ohm[/tex]

b. I = V / Z
I = 50 / 500
I = 0,1 A

c. [tex] V_{L} [/tex] = I × [tex] X_{L} [/tex]
[tex] V_{L} [/tex] = 0,1 × 900 = 90 V

[tex] V_{C} [/tex] = I × [tex] X_{C} [/tex]
[tex] V_{C} [/tex] = 0,1 × 500
[tex] V_{C} [/tex] = 50 V