Question Detail
Question
When an uncharged capacitor in an RC circuit is connected to a battery for charging, how does the current behave over time?
Correct Answer
Option B is the correct answer.
Detailed Explanation
As shown in graph (a) on page 19 and page 21 for a charging capacitor, the current starts at a maximum value (I₀) when the switch is closed and then decreases exponentially over time as the capacitor charges, eventually approaching zero.
Hint
Think about how the potential difference across the resistor changes as the capacitor accumulates charge.