Passage IV

Figure 1 is a diagram of an RLC circuit. The circuit has a power supply and 3 components: a resistor (R), an inductor (L), and a capacitor (C).

Electric current can flow through the circuit either clockwise (positive current) or counterclockwise (negative current). Figure 2 shows how the electric current in the circuit, I (in amperes, A), and the power supply voltage, Vs (in volts, V), both changed during a 20-millisecond (msec) time interval.

Figure 3 shows how the voltages across the components—VR, VL, and VC, respectively—each changed during the same 20 msec time interval.

26. The table below lists the electric charge (in microcoulombs, μC) stored on the capacitor at 3 different times during the 20 mesc interval.

Based on Figures 2 and 3, from time = 7 msec through time = 13 msec, did the charge on the capacitor more likely change in sync with I or with VC ?

Answer and Explanation

Your Answer is

Correct Answer is J

Explanation

Sync synchronization. Looking at the table given in the title, when the time is 7-13 msec, the electric charge first increases and then decreases, which is the same as the trend of VC in figure 3