Question Detail

PHY 102 Current Electricity Objective Question

Question

During the discharging of a capacitor in an RC circuit, how does the charge on the capacitor plates behave over time?
Options
A It increases exponentially, approaching a final maximum value.
B It decreases exponentially, approaching zero.
Correct Answer
C It increases linearly.
D It remains constant after an initial drop.
Correct Answer

Option B is the correct answer.

Detailed Explanation

As depicted in graph (b) on page 27 and page 29 for a discharging capacitor, the charge on the capacitor plates starts from its maximum initial value (Q₀) and decreases exponentially over time, approaching zero as the capacitor discharges completely.

Hint

Discharging means the capacitor is losing its stored electrical energy and charge.

Question Info