Jawaban:

1.

R = 8 ohm

L = 3,2 mH = 3,2x10^-3 H

C = 800 μ F = 800x10^-6 F

v = 120 volt

ω = 125  rad/s

I = V/Z

Z = √(R^2 + (XL –XC)^2)

XL = ωL = 125*3,2x10^-3 = 0,4 ohm

XC = 1/ ωC = 1/125*800x10^-6 = 1/0,1 = 10 ohm

XL – XC = 0,4 – 10 = -9,6 ohm

Z = √ (8^2 + 9,6^2) = √156 = 12,5 ohm

I = V/Z =120/12,5 = 9,6 A

XC > XL bersifat kapasitif

2.

L = 10^-3 H

f = 1000 Hz

f = 1 / ( 2 π √ LC )

f^2 = 1 / ( 4 π^2  L C )

1000^2 = 1/ ( 4*10*10^-3*C)

C = 1 / 40000 = 0,25x10^-4 C = 25 μF

Penjelasan: