How do I correctly determine the capacitor's (C_1) capacity, without looking at the time constant? My idea was to calculate the integral of the capacitive part of the current and divide it by the voltage VG1. This does not yield the correct result. What is wrong about my approach?
//Edit I tried to derive the current at the amp-meter: \$ I = V_G1/(R_1+R_2) + (R_2*VG1*\exp(-t(R_1+R_2)/(C_1*R_1*R_2)) +1/(R_1(R_1+R_2)) \$
Is that correct? Is the RC-circuit a high-pass?