How to Calculate RLC Phase Angle in Multisim

AI Thread Summary
The discussion focuses on calculating the phase angle across capacitors and inductors in a Multisim circuit. The user initially struggles with measuring the phase angle due to issues with the oscilloscope and circuit configuration. They mention that the phase angle for capacitors is typically -90 degrees and for inductors is +90 degrees. A suggested approach involves measuring the time difference between the source wave and the component wave, using the equation φ = ωΔT. The user seeks clarification on the discrepancy between their oscilloscope readings and lab measurements, particularly regarding the capacitor voltage lagging the signal voltage.
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Homework Statement


This is actually a lab I'm performing on Multisim. I've recreated a circuit that I build in lab class , but I'm not getting the output I need. I am trying to calculate the V and phase angle across each component. I already have the measurements found form the class lab. In addition to the oscilloscope terminal B not working, I'm not sure how to calculate the phase angle across the cap and inductor.

I know that each angle is -90 for cap and +90 for inductor.

Homework Equations


See images
RLC.png
RLC phase angle.png


The Attempt at a Solution



Measured values, but not sure how to apply to phase angle equation to find capacitor and inductor phase angles.
 
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Nevermind the multisim question, I figured out what I was doing wrong. As far as calculating the phase angles: do I measure the distance between the source wave and the component wave (wave/division) then take the tan-1(dV/R)?
 
but not sure how to apply to phase angle equation to find capacitor and inductor phase angles.

The equation you have been given is for the phase of the entire circuit.

I'm not sure, but you may be looking for a "phase difference". In that case ##\phi = \omega \Delta T = 2 \pi f \Delta T## should be all you need.
 
My second port is no longer flat-lining, and I know I have to move the placement of the resistor in the circuit in order to get a reading of it on the oscilliscope, but the scope doesn't match my Vr measurement from lab, instead its looks closer to what I got for the Vcap measure. Could someone please explain this to me?
 

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You have B monitoring the capacitor voltage (between the capacitor and earth), and the display shows this voltage lagging the signal voltage.
 
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