Electrical Engineering - Capacitors - Discussion

Discussion Forum : Capacitors - General Questions (Q.No. 15)
15.
A 12 kHz voltage is applied to a 0.33 F capacitor, and 200 mA of rms current is measured. What is the value of the voltage?
8 V
80 V
80 mV
800 mV
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
14 comments Page 1 of 2.

Sai said:   5 years ago
What about the RMS current?

Sai said:   5 years ago
@Bijendra Kumar.

F=PN/120.
Where N=120F/P.
Apply the above formula to find the frequency we get 550 Hertz.

Taha said:   6 years ago
Xc is similar to resistance so apply ohms law.

Tejash said:   6 years ago
Que condenser take a current 4.4a from 280v 50hz calculate the capcitance of the condenser.

Shwetha said:   6 years ago
Here, N=120f/p.

F=3300*20/120 = 550HZ.

D Shwetha said:   7 years ago
Xc or XL or Z(Impedance) or Resistance all units are same (Ohm) instead of R, above anyone also we can use
R= Xc or XL or Z.

Hassan Ahmed EId said:   8 years ago
After calculation Xc = 40.21102, V= iXc but I= 200mA in rms therefore I = 0.2828.

Therefore E = 0.2828 x 40.21102 = 11.375A.

Bijendra kumar said:   8 years ago
One hydro alternator has 20 poles and rotates at 3300rpm. Then it's frequency is. Please explain the answer.
(1)

MIR HAMID said:   8 years ago
The Inductor is property which opposed the direction of a current. And resistance opposed the current.

Deepak kumar said:   1 decade ago
One condenser takes 4.4 amp at 280, 50 Hz the value of the condenser.
(1)


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