Electronics - Capacitors - Discussion
Discussion Forum : Capacitors - General Questions (Q.No. 4)
4.
What is the reactive power in the given circuit?
0 VAR
691 
VAR
VAR44.23 mVAR
1.45 kVAR
Discussion:
36 comments Page 3 of 4.
Shashi said:
1 decade ago
Power reactive capacitance's formula is "P = V^2/Xc".
but now we don't know What is the Xc(Capacitance reactance)so first we should find Xc.
Xc = 1/2*pi*F*C.
Xc = 1446.86 ohm.
P = V^2/Xc.
= 8^2/1446.86.
= 64/1446.86.
= 0.4423 VAR.
= 44.23 mVAR.
but now we don't know What is the Xc(Capacitance reactance)so first we should find Xc.
Xc = 1/2*pi*F*C.
Xc = 1446.86 ohm.
P = V^2/Xc.
= 8^2/1446.86.
= 64/1446.86.
= 0.4423 VAR.
= 44.23 mVAR.
Gomathi said:
1 decade ago
Why they use the unit VAR (IN ANS). If it's one of the unit of mean where we use?
Rachna said:
1 decade ago
How the problem can be solve?
Kiran said:
1 decade ago
VAR - Volt Ampere Reactance (Units of reactive power).
Siva said:
1 decade ago
In our home we see 230 v whether it is RMRS value or anything.
Savi said:
1 decade ago
I didn't understand please tell me easy way.
Pavan Kumar said:
1 decade ago
Reactive Power is the power which is lost in the circuit and hence not delivered to the Load.
(1)
Harika said:
10 years ago
Please can anyone explain the derivation of P=V^2/Xc?
ADARSH said:
10 years ago
Yes as we know that:
P = v^2/R.
Where R is Reactant denoted by Xc.
Xc = 1/2*pi*f**c.
Where pi-constant, f-frequency & c-capacitance.
P = v^2/R.
Where R is Reactant denoted by Xc.
Xc = 1/2*pi*f**c.
Where pi-constant, f-frequency & c-capacitance.
Yashu said:
9 years ago
What is the value of Pi?
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