Capacitor Voltage-current Relations

First, we did some problems

Starting lab...
                In this lab, we are going to connect a resistor(100-ohm) and capacitor in series with sinusoidal voltage sources and triangle source and we are going to measure voltages across resistor and capacitor.
(Notes: sinusoidal voltage source can go through capacitors)

Setup(1)

Setup(2)

Graph of sinusoidal wave with 1kHz and 2V amplitude

Graph of sinusoidal wave with 2kHz 2V amplitude

Graph of triangle wave with 100Hz and amplitude of 4V

 Summary: In this lab we used both sinusoidal and triangle wave through circuit with resistor and capacitor in series. With its frequency increased in second measurement it is appeared that voltage difference between resistor and capacitor is decreased. It could be case of with frequency changing so fast that capacitor does not have enough time to charge to higher voltage. As for triangle wave, we could see it stops charging at certain times; it is because the amplitude of triangle wave is twice of voltage as before so the capacitors charge to its charging capacity and thus stop charging. For the curve of current(orange line), I think you typed the equation wrong in waveform or it could be very small ,so we could not see it is actually changing.