______________ charging current starts at a relatively high value and rapidly decreases after the ______________ element of the component has been charged to its full voltage.

The concept of charging current pertains primarily to capacitive components within electrical systems. When a capacitor begins to charge, it does so from an initially high current as it draws energy to build up an electric field. As the capacitor approaches its maximum capacity or full voltage, the charging current declines sharply. This is because the capacitance of the component dictates how much charge it can hold; once the voltage across the capacitor matches its rated voltage, the need for significant current diminishes rapidly.

Therefore, the choice about capacitance being linked with insulation (which relates to the dielectric properties of the capacitor) accurately captures the behavior of the charging current. It highlights that as the capacitance element is sufficiently charged, the corresponding elements (like insulation properties) exhibit stability, leading to the observed decrease in current.