Voltage Lab

Voltage and current are in phase

Question 1 of 10

What does RMS stand for in the context of AC voltage?

RMS stands for Root Mean Square, a method to determine the equivalent DC voltage that would produce the same power dissipation in a resistive load.

Question 2 of 10

The RMS voltage is defined by its ability to deliver the same average power to a resistive load as an equivalent DC voltage.

Question 3 of 10

Vrms = 0.707 * Vp. Therefore, 0.707 * 100V = 70.7V

Question 4 of 10

Vrms is calculated by dividing the peak voltage by the square root of 2.

Question 5 of 10

The form factor is the ratio of RMS value to the average value, and for a sine wave, it is approximately 1.11.

Question 6 of 10

First, calculate Vp: Vp = Vpp / 2 = 100V. Then, Vrms = 0.707 * Vp = 70.7V.

Question 7 of 10

The positive and negative halves of a sine wave cancel each other out over a full cycle, resulting in an average voltage of zero.

Question 8 of 10

Vrms is approximately 1.11 times the average value for a sine wave.

Question 9 of 10

In a resistive circuit, the voltage and current waveforms are in phase with each other; their peaks and zero crossings occur at the same time.

Question 10 of 10

The peak factor (or crest factor) is the ratio of the peak value to the RMS value, which is approximately 1.414 (or ?2) for a sine wave.