A resistor,an uncharged capacitor,a dc voltage source,and an open switch are all connected in series.The switch is closed at time t = 0 s.Which one of the following is a correct statement about the circuit?
A)The capacitor charges to its maximum value in one time constant.
B)The capacitor charges to its maximum value in two time constants.
C)The potential difference across the resistor is always equal to the potential difference across the capacitor.
D)Current flows through the circuit even after the capacitor is essentially fully charged.
E)Once the capacitor is essentially fully charged,there is no current in the circuit.

Question

Quizplus · Accepted Answer

Once a capacitor is fully charged in a DC circuit, it acts like an open circuit, meaning no current flows through the circuit. This is because the capacitor opposes changes in voltage by storing energy in its electric field, and once fully charged, it maintains the voltage across its plates, preventing further current flow.

A Resistor,an Uncharged Capacitor,a Dc Voltage Source,and an Open Switch