Enter the peak voltage or the effective voltage into the calculator to determine the missing value.
Effective Voltage Formula
The following formula is used to calculate the effective voltage (Veff) for a given peak voltage (Vpeak).
V_{eff} = \frac{V_{peak}}{\sqrt{2}}Variables:
- Veff is the effective voltage
- Vpeak is the peak voltage
To calculate the effective voltage, divide the peak voltage by the square root of 2. This formula is derived from the relationship between peak and RMS (root mean square) values in AC circuits.
What is Effective Voltage?
Effective voltage, also known as RMS (root mean square) voltage, is a measure of the equivalent DC voltage that would produce the same power dissipation in a resistive load. It is a crucial parameter in AC (alternating current) circuits because it allows for the comparison of AC and DC voltages in terms of their ability to deliver power. The effective voltage is typically lower than the peak voltage, as it represents an average value over time.
How to Calculate Effective Voltage?
The following steps outline how to calculate the Effective Voltage.
- First, measure the peak voltage (Vpeak) of the AC signal.
- Next, use the formula Veff = Vpeak / √2 to calculate the effective voltage.
- Finally, verify your calculation using the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
Peak Voltage (Vpeak) = 10 V
Effective Voltage (Veff) = 10 / √2 ≈ 7.07 V