Reactive Power Solution

STEP 0: Pre-Calculation Summary
Formula Used
Reactive Power = Current*Voltage*sin(Phase Difference)
Q = I*V*sin(Φ)
This formula uses 1 Functions, 4 Variables
Functions Used
sin - Sine is a trigonometric function that describes the ratio of the length of the opposite side of a right triangle to the length of the hypotenuse., sin(Angle)
Variables Used
Reactive Power - (Measured in Watt) - Reactive Power is a measure of the energy exchange between the source and the reactive part of the load.
Current - (Measured in Ampere) - Current or AC is an electric current which periodically reverses direction and changes its magnitude continuously with time in contrast to direct current which flows only in one direction.
Voltage - (Measured in Volt) - Voltage is used to determine the value of the potential difference between terminals where alternating current flows.
Phase Difference - (Measured in Radian) - Phase Difference is defined as the difference between the phasor of apparent and real power (in degrees) or between voltage and current in an ac circuit.
STEP 1: Convert Input(s) to Base Unit
Current: 2.1 Ampere --> 2.1 Ampere No Conversion Required
Voltage: 130 Volt --> 130 Volt No Conversion Required
Phase Difference: 30 Degree --> 0.5235987755982 Radian (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Q = I*V*sin(Φ) --> 2.1*130*sin(0.5235987755982)
Evaluating ... ...
Q = 136.5
STEP 3: Convert Result to Output's Unit
136.5 Watt -->136.5 Volt Ampere Reactive (Check conversion here)
FINAL ANSWER
136.5 Volt Ampere Reactive <-- Reactive Power
(Calculation completed in 00.004 seconds)

Credits

Created by Urvi Rathod
Vishwakarma Government Engineering College (VGEC), Ahmedabad
Urvi Rathod has created this Calculator and 1500+ more calculators!
Verified by Team Softusvista
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12 Power Calculators

Reactive Power using Line-to-Neutral Current
Go Reactive Power = 3*Line to Neutral Current*Line to Neutral Voltage*sin(Phase Difference)
Reactive Power using RMS Voltage and Current
Go Reactive Power = Root Mean Square Voltage*Root Mean Square Current*sin(Phase Difference)
Real Power using Line-to-Neutral Voltage
Go Real Power = 3*Line to Neutral Current*Line to Neutral Voltage*cos(Phase Difference)
Real Power using RMS Voltage and Current
Go Real Power = Root Mean Square Current*Root Mean Square Voltage*cos(Phase Difference)
Power in Three-Phase AC Circuits using Phase Current
Go Real Power = 3*Phase Voltage*Phase Current*cos(Phase Difference)
Power in Single-Phase AC Circuits using Voltage
Go Real Power = (Voltage^2*cos(Phase Difference))/Resistance
Power in Single-Phase AC Circuits using Current
Go Real Power = Current^2*Resistance*cos(Phase Difference)
Reactive Power
Go Reactive Power = Current*Voltage*sin(Phase Difference)
Power in Single-Phase AC Circuits
Go Real Power = Voltage*Current*cos(Phase Difference)
Real Power in AC Circuit
Go Real Power = Voltage*Current*cos(Phase Difference)
Complex Power
Go Complex Power = sqrt(Real Power^2+Reactive Power^2)
Complex Power given Power Factor
Go Complex Power = Real Power/cos(Phase Difference)

25 AC Circuit Design Calculators

Resistance for Series RLC Circuit given Q Factor
Go Resistance = sqrt(Inductance)/(Series RLC Quality Factor*sqrt(Capacitance))
Line to Neutral Current using Reactive Power
Go Line to Neutral Current = Reactive Power/(3*Line to Neutral Voltage*sin(Phase Difference))
RMS Current using Reactive Power
Go Root Mean Square Current = Reactive Power/(Root Mean Square Voltage*sin(Phase Difference))
Line to Neutral Current using Real Power
Go Line to Neutral Current = Real Power/(3*cos(Phase Difference)*Line to Neutral Voltage)
RMS Current using Real Power
Go Root Mean Square Current = Real Power/(Root Mean Square Voltage*cos(Phase Difference))
Resistance for Parallel RLC Circuit using Q Factor
Go Resistance = Parallel RLC Quality Factor/(sqrt(Capacitance/Inductance))
Resonant Frequency for RLC circuit
Go Resonant Frequency = 1/(2*pi*sqrt(Inductance*Capacitance))
Electric Current using Reactive Power
Go Current = Reactive Power/(Voltage*sin(Phase Difference))
Electric Current using Real Power
Go Current = Real Power/(Voltage*cos(Phase Difference))
Power in Single-Phase AC Circuits
Go Real Power = Voltage*Current*cos(Phase Difference)
Inductance for Parallel RLC Circuit using Q Factor
Go Inductance = (Capacitance*Resistance^2)/(Parallel RLC Quality Factor^2)
Capacitance for Parallel RLC Circuit using Q Factor
Go Capacitance = (Inductance*Parallel RLC Quality Factor^2)/Resistance^2
Capacitance for Series RLC Circuit given Q Factor
Go Capacitance = Inductance/(Series RLC Quality Factor^2*Resistance^2)
Inductance for Series RLC Circuit given Q Factor
Go Inductance = Capacitance*Series RLC Quality Factor^2*Resistance^2
Capacitance given Cut off Frequency
Go Capacitance = 1/(2*Resistance*pi*Cut-off Frequency)
Cut Off Frequency for RC circuit
Go Cut-off Frequency = 1/(2*pi*Capacitance*Resistance)
Complex Power
Go Complex Power = sqrt(Real Power^2+Reactive Power^2)
Complex Power given Power Factor
Go Complex Power = Real Power/cos(Phase Difference)
Current using Power Factor
Go Current = Real Power/(Power Factor*Voltage)
Current using Complex Power
Go Current = sqrt(Complex Power/Impedance)
Frequency using Time Period
Go Natural Frequency = 1/(2*pi*Time Period)
Capacitance using Time Constant
Go Capacitance = Time Constant/Resistance
Resistance using Time Constant
Go Resistance = Time Constant/Capacitance
Impedance given Complex Power and Voltage
Go Impedance = (Voltage^2)/Complex Power
Impedance given Complex Power and Current
Go Impedance = Complex Power/(Current^2)

Reactive Power Formula

Reactive Power = Current*Voltage*sin(Phase Difference)
Q = I*V*sin(Φ)

What is the difference between real power and reactive power?

Real Power is equal to the Reactive Power i.e. there is no VAr in DC Circuits. Only Real Power exists. There is no Reactive Power in DC circuits due to the zero phase angle (Φ) between current and voltage. Real power is important to produce heat and utilize the electric and magnetic field generated by Reactive Power.

How to Calculate Reactive Power?

Reactive Power calculator uses Reactive Power = Current*Voltage*sin(Phase Difference) to calculate the Reactive Power, Reactive power is the power that flows back from a destination toward the grid in an alternating current scenario. Reactive Power is denoted by Q symbol.

How to calculate Reactive Power using this online calculator? To use this online calculator for Reactive Power, enter Current (I), Voltage (V) & Phase Difference (Φ) and hit the calculate button. Here is how the Reactive Power calculation can be explained with given input values -> 136.5 = 2.1*130*sin(0.5235987755982).

FAQ

What is Reactive Power?
Reactive power is the power that flows back from a destination toward the grid in an alternating current scenario and is represented as Q = I*V*sin(Φ) or Reactive Power = Current*Voltage*sin(Phase Difference). Current or AC is an electric current which periodically reverses direction and changes its magnitude continuously with time in contrast to direct current which flows only in one direction, Voltage is used to determine the value of the potential difference between terminals where alternating current flows & Phase Difference is defined as the difference between the phasor of apparent and real power (in degrees) or between voltage and current in an ac circuit.
How to calculate Reactive Power?
Reactive power is the power that flows back from a destination toward the grid in an alternating current scenario is calculated using Reactive Power = Current*Voltage*sin(Phase Difference). To calculate Reactive Power, you need Current (I), Voltage (V) & Phase Difference (Φ). With our tool, you need to enter the respective value for Current, Voltage & Phase Difference and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Reactive Power?
In this formula, Reactive Power uses Current, Voltage & Phase Difference. We can use 4 other way(s) to calculate the same, which is/are as follows -
  • Reactive Power = 3*Line to Neutral Current*Line to Neutral Voltage*sin(Phase Difference)
  • Reactive Power = Root Mean Square Voltage*Root Mean Square Current*sin(Phase Difference)
  • Reactive Power = 3*Line to Neutral Current*Line to Neutral Voltage*sin(Phase Difference)
  • Reactive Power = Root Mean Square Voltage*Root Mean Square Current*sin(Phase Difference)
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