What is the evidence from Studies 1 and 2 that capacitors and inductors worked in opposite ways?Passage III
A capacitor is the name for a device that stores electrical charge. Capacitance is the amount of charge that a capacitor can hold at a given voltage. In a science class, a teacher instructed her students to determine the charge on a parallel plate capacitor with a fixed capacitance. Students conducted a few different studies with this capacitor.
Study 1
Students constructed an electrical circuit with the capacitor, as shown in Figure 1. The capacitor was initially uncharged.
Students then charged the capacitor and recorded the voltage at specific time intervals. They then used a computer program to help them graph this information, which is recorded in Figure 2.
With this data, students then calculated the current at each time interval and recorded this information in Table 1. The students noted any trends and determined that voltage and current initially change rapidly before leveling out.
Study 2
The teacher then introduced students to an inductor and explained that, contrary to capacitors, which store energy in an electric field, inductors store energy in a magnetic field produced by the current running through the wire. As a result,
inductors oppose changes in current and act opposite of capacitors, which oppose changes in voltage. She then drew a diagram on the board for students, Figure 3.
The teacher then recorded the decay in voltage over time and represented this in a graph for students, as shown in Figure 4.
Finally, she plotted the drop in voltage and increase in current in a chart similar to the one that the students had produced in Study 1 (see Table 2).
Question 1 of 2
What is the evidence from Studies 1 and 2 that capacitors and inductors worked in opposite ways?
As time progressed, capacitor voltage increased while inductor voltage decreased.
As time progressed, capacitor voltage decreased while inductor voltage increased.
As time progressed, capacitor current increased while inductor current decreased.