Multisim. Why the parameters of voltage in osciloscope and voltmeter diferent?
The oscilloscope is displaying the 100 \$V_{rms}\$ waveform exactly as it is, \$141 V_{pk}\$. (For the sine wave case, the peak value is \$\sqrt{2}*V_{rms}\$.) The meter is displaying the RMS voltage, which you put in the simulation. There is nothing wrong.