C = 1/2*3.14*50*2K = 1.59uF. so both the parameters are similar with different current capacity
when it comes to resistor circuit Irms=230/4K = 57mA (Imax = 80mA)
when it comes to RC Xc = 2K and R = 2K, so Z = sqrt(Xc^2+R^2) which 2828 ohms and Irms = V/Z = 81mA, and i max is 115mA
