LTSpice RC circuit simulation: Capacitor voltage instantly at 12V instead of charging

The discussion addresses an issue in LTSpice simulation where an electrolytic capacitor in an RC circuit appears to instantly reach 12V instead of showing a gradual charging curve according to the RC time constant. The solution involves setting initial conditions in the simulation by adding the SPICE directive ".ic V(N002)=0" to specify the capacitor node voltage starts at zero volts. This prevents the simulator from assuming steady-state conditions at the start. An alternative approach mentioned is using a digital clock source instead of a DC power source to observe the charging behavior dynamically, as DC sources may only provide steady-state results. The capacitor charging curve was successfully simulated using a 10 Hz clock, 1 µF capacitor, and 10 kΩ resistor. Additional explanations on capacitor function and capacitance units were provided, but unrelated content about a feedback platform was noted as off-topic.
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