Question

find the current that will flow in series circuit containing a 5k ohm resistor and a 470 pF capacitor, a 150 mH inductor and 0.001 uF capacitor if the exciting voltage is 65 V at 25 kHz​

Answer 1

Answer:

your answer is 20k with 5ohms

Answer 2

Answer:

8.48 - j6.19 A

Explanation:

Series RLC in Complex Form:  Z = R + (XL - XC)

Total Capacitance = ((470pF)^-1 + (0.001uF)^-1)^-1 = 3.197 x 10^-10

Xc = 1 / 2*pi*25kHz*3.197 x 10^-10 = 19.911 kohms

XL = 2*pi*25kHz*150mH = 23.562 kohms

Z = 5 kohms + j(23.562 - 19.911) kohms

I = 65 cis 0deg / 5 kohms + j(23.562 - 19.911)  = 8.48 - j6.19 A

~ lilmamaw