Millivolt-Amperes (mVA) | Volt-Amperes (VA) |
---|---|
0 | 0 |
1 | 0.001 |
2 | 0.002 |
3 | 0.003 |
4 | 0.004 |
5 | 0.005 |
6 | 0.006 |
7 | 0.007 |
8 | 0.008 |
9 | 0.009 |
10 | 0.01 |
20 | 0.02 |
30 | 0.03 |
40 | 0.04 |
50 | 0.05 |
60 | 0.06 |
70 | 0.07 |
80 | 0.08 |
90 | 0.09 |
100 | 0.1 |
1000 | 1 |
Converting between millivolt-amperes (mVA) and volt-amperes (VA) involves understanding the relationship between these units of apparent power. The conversion is the same for both base 10 and base 2, as it's a straightforward metric conversion.
The key is knowing that "milli-" represents one-thousandth. Therefore:
This relationship holds true regardless of the base you're using (decimal or binary), as it's a standard SI unit prefix.
To convert from mVA to VA, divide the value in mVA by 1000.
Example: Convert 1 mVA to VA.
To convert from VA to mVA, multiply the value in VA by 1000.
Example: Convert 1 VA to mVA.
The relationship between them is:
This concept is fundamental in electrical engineering and AC circuit analysis. Understanding apparent power is crucial for sizing electrical equipment, as it accounts for the total current the equipment must handle.
While directly converting mVA to VA might seem abstract, here are some scenarios where understanding these units is crucial:
While no specific law is directly associated with mVA to VA conversion, the underlying principles are governed by fundamental electrical laws, particularly Ohm's Law and the power equations for AC circuits. Georg Ohm's work on the relationship between voltage, current, and resistance is foundational to understanding power calculations.
See below section for step by step unit conversion with formulas and explanations. Please refer to the table below for a list of all the Volt-Amperes to other unit conversions.
Millivolt-Amperes (mVA) are a unit of apparent power, commonly used in electrical engineering and electronics. They represent the product of voltage and current, scaled down by a factor of one thousand for both volts and amperes.
Apparent power is a measure of the total power in an alternating current (AC) circuit. It's the product of the root mean square (RMS) voltage and the RMS current. Apparent power is measured in volt-amperes (VA), but for smaller values, millivolt-amperes (mVA) are used. It's important to distinguish apparent power from active power (measured in watts) and reactive power (measured in VARs).
To convert to mVA:
Or
Millivolt-Amperes arise from multiplying millivolts (mV) by milliamperes (mA). It provides a convenient unit for expressing small power values in electronic circuits and devices. Here's a breakdown:
Therefore, 1 mVA is equal to 0.000001 VA or VA.
While there isn't a specific "law" directly associated with mVA, the concept is rooted in Ohm's Law and basic electrical power principles. Apparent power, including its mVA representation, is crucial in AC circuits because it helps in understanding the total electrical load, which is vital for the selection of appropriate electrical components like wires, circuit breakers, and power supplies.
For further reading, refer to resources on AC power theory and electrical circuit analysis available on websites such as All About Circuits and educational platforms like Khan Academy's Physics section.
Volt-Amperes (VA) are the units used to measure apparent power in an electrical circuit. Apparent power is the product of the voltage and current in a circuit, representing the total power that the circuit appears to be using. This differs from real power, which accounts for the power actually consumed by the load. Let's delve deeper.
In AC circuits, voltage and current are not always in phase, which means that the power supplied is not entirely consumed by the load. Some of the power is returned to the source. This is due to reactive components like inductors and capacitors. Volt-Amperes represent the total power handled by the circuit, including both the real power (measured in watts) and the reactive power (measured in VAR - Volt-Amperes Reactive).
The relationship between apparent power (S), real power (P), and reactive power (Q) is expressed as:
Where:
Volt-Amperes are calculated by multiplying the root mean square (RMS) voltage (V) by the RMS current (I) in the circuit:
This calculation gives the magnitude of the apparent power. Keep in mind that, unlike real power, apparent power doesn't account for the phase difference between voltage and current.
Charles Proteus Steinmetz was a brilliant electrical engineer and mathematician. He is well know for for his contribution in the development of alternating current systems. He developed the concept of using complex numbers to represent AC circuits, which greatly simplified power calculations. In this representation:
Where:
The magnitude of S is still in Volt-Amperes
Convert 1 mVA to other units | Result |
---|---|
Millivolt-Amperes to Volt-Amperes (mVA to VA) | 0.001 |
Millivolt-Amperes to Kilovolt-Amperes (mVA to kVA) | 0.000001 |
Millivolt-Amperes to Megavolt-Amperes (mVA to MVA) | 1e-9 |
Millivolt-Amperes to Gigavolt-Amperes (mVA to GVA) | 1e-12 |