The role of chip capacitor in circuit

In a direct current circuit, a capacitor is equivalent to a circuit breaker. A capacitor is a component that holds electrical charge and is one of the most commonly used electronic components.
It depends on the structure of the capacitor. The simplest capacitor is made up of polar plates at both ends and insulated dielectric (including air) in the center. After electrifying, charged plate forming voltage (potential difference), but, due to the middle insulating material, so the capacitor is not conductive. However, this is the case without exceeding the critical voltage of the capacitor (breakdown voltage). We know that any substance is relatively insulated, and when the voltage at both ends of the material increases to a certain extent, the material is electrically conductive. We call this voltage the breakdown voltage. The capacitor is no exception. When the capacitor is broken down, it is not an insulator. In secondary school, however, such voltages are not seen in the circuit, so they work below the breakdown voltage and can be seen as insulators.
However, in alternating current circuits, the direction of the current varies as a function of time. The process of charging and discharging the capacitor is time. At this time, the electric field is changed between the plates, and the electric field is also a function of time. In fact, the current is passed through the capacitor in the form of a field.
In secondary school, there is a saying, called "communication", "blocking DC", that is, the nature of the capacitor.