What does volt ampere measure?

Volt ampere (V*A) measures the apparent power in AC circuits, calculated as the product of root-mean-square voltage and current.

Why convert volt ampere to attojoule per second?

Converting to attojoule per second helps express electrical apparent power in extremely small units, useful for ultra-low-power and precision nanoscale applications.

Is volt ampere always equal to watts?

No, volt ampere equals watts only when the power factor is 1, meaning a purely resistive load; otherwise, they differ.

How to Convert from Volt ampere [V*A] to Attojoule/second [aJ/s]

Learn how to convert power units from volt ampere (V*A) to attojoule per second (aJ/s) with this comprehensive guide. Understand the definitions, use cases, and step-by-step instructions for accurate unit conversion.

Volt ampere [V*A]

Attojoule/second [aJ/s]

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Volt ampere [V*A] to Attojoule/second [aJ/s] Conversion Table

Volt ampere [V*A]	Attojoule/second [aJ/s]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Volt ampere [V*A] to Attojoule/second [aJ/s] Conversion Table
Volt ampere [V*A]	Attojoule/second [aJ/s]

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What Is This Tool?

This tool allows users to convert power measurements from volt ampere (V*A), a unit of apparent power used in AC electrical systems, to attojoule per second (aJ/s), a unit denoting extremely small power levels often used in advanced scientific and nanoscale applications.

How to Use This Tool?

Enter the power value in volt ampere (V*A) you want to convert
Select the from-unit as volt ampere and to-unit as attojoule/second
Click the convert button to obtain the equivalent power in attojoule/second
Review the results with example references to understand the conversion scale

Key Features

Converts between volt ampere and attojoule per second units with precision
Supports electrical engineering and ultra-low-power measurement contexts
Browser-based, easy to use without software installation
Provides exact multiplication factor for conversion
Includes example calculations for better understanding

Examples

2 Volt ampere equals 2 × 10¹⁸ attojoule/second, which is 2000000000000000000 aJ/s
0.5 Volt ampere equals 0.5 × 10¹⁸ attojoule/second, or 500000000000000000 aJ/s

Common Use Cases

Rating transformers and uninterruptible power supplies by apparent power capacity
Specifying electrical distribution and protective equipment independently of power factor
Analyzing ultra-low-power microelectronic sensors and IoT devices
Measuring energy transfer in quantum devices and nanoscale experiments
Quantifying extremely small heat flows in cryogenic and nanoscale thermal metrology

Tips & Best Practices

Ensure the power factor is considered when interpreting volt ampere values
Use this conversion mainly for scientific and precision applications involving very small power levels
Refer to example conversions to verify your calculations
Understand that volt ampere represents apparent power, not always equal to real power
Use the exact multiplication factor to maintain conversion accuracy

Limitations

Volt ampere indicates apparent power and may differ from actual real power depending on power factor
Conversion to attojoule per second assumes equivalence to watts for dimensional comparison
Attojoule per second units are impractical for general electricity measurements due to their extremely small scale
This tool is most relevant for specialized scientific, quantum, and nanoscale contexts

Frequently Asked Questions

What does volt ampere measure?: Volt ampere (V*A) measures the apparent power in AC circuits, calculated as the product of root-mean-square voltage and current.
Why convert volt ampere to attojoule per second?: Converting to attojoule per second helps express electrical apparent power in extremely small units, useful for ultra-low-power and precision nanoscale applications.
Is volt ampere always equal to watts?: No, volt ampere equals watts only when the power factor is 1, meaning a purely resistive load; otherwise, they differ.

Key Terminology

Volt ampere (V*A): A unit of apparent power in AC circuits equal to the product of RMS voltage and RMS current.
Attojoule per second (aJ/s): A unit of power representing 10^-18 joules transferred per second, used for extremely small energy transfer rates.
Apparent power: The combination of real power and reactive power in an AC circuit, measured in volt amperes.
Power factor: The ratio of real power to apparent power, indicating the efficiency of power usage in AC circuits.

Quick Knowledge Check

What unit does volt ampere [V*A] measure?

Real power in DC circuits

Apparent power in AC circuits

Energy consumption over time

What is an appropriate use for attojoule per second [aJ/s] units?

Measuring household electricity consumption

Analyzing ultra-low-power nanoscale devices

Rating large power transformers

Which statement about volt ampere and watts is true?

They are identical regardless of the power factor

Volt ampere equals watts only when power factor equals 1

Watts measure apparent power, volt ampere measures real power

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