If the RMS value is 125 volts, what is the peak value?

If the RMS value is 125 volts, what is the peak value?

• A. 250 volts
• B. 176.75 volts
• C. 125 volts
• D. 220 volts

Answer: (B)

To find the peak value from the RMS (Root Mean Square) value, you use the relationship between these two measurements in AC circuits. The formula to convert RMS to peak voltage is: Peak Voltage = RMS Voltage × √2 Given that the RMS value is 125 volts, we can perform the calculation as follows: Peak Voltage = 125 volts × √2 Peak Voltage ≈ 125 volts × 1.414 (approximately) Peak Voltage ≈ 176.78 volts When rounded, this gives us roughly 176.75 volts, which corresponds with the provided answer. Understanding this relationship is crucial in electrical theory as it enables you to translate between these two important measurements, helping you to work effectively with AC voltage in both theoretical and practical applications.

To find the peak value from the RMS (Root Mean Square) value, you use the relationship between these two measurements in AC circuits. The formula to convert RMS to peak voltage is:

Peak Voltage = RMS Voltage × √2

Given that the RMS value is 125 volts, we can perform the calculation as follows:

Peak Voltage = 125 volts × √2

Peak Voltage ≈ 125 volts × 1.414 (approximately)

Peak Voltage ≈ 176.78 volts

When rounded, this gives us roughly 176.75 volts, which corresponds with the provided answer.

Understanding this relationship is crucial in electrical theory as it enables you to translate between these two important measurements, helping you to work effectively with AC voltage in both theoretical and practical applications.