I'm trying to make a very simplistic model showing the effect of inductive and capacitive coupling to wires in LTspice. I want to use this model to show people who are not so familiar with the topic. I also don't want to involve transmission lines and simplify it to a lumped circuit model. Basically I want to show the importance of balanced transmission to eliminate the noise. For example, in below circuit I tried to add capacitive coupling from AC mains and some radiated noise as inductive coupling(using a transformer model). Vs is the signal source 1V 1Hz sine wave. R_source is the output impedance. R_balance is the series resistor to make the transmission balanced. So far I tweaked the values and by removing R_balanced or putting it back and simulating I can show that both noise can be eliminated by balancing.
But I'm not sure my way of coupling in the model is okay enough and especially the values for the parasitic capacitances and inductances C1, C2, Ls1, Ls2 are realistic enough. How can I make this circuit more realistic? Is there anything fundamentally wrong?