Question Detail

PHY 102 Current Electricity Objective Question

Question

During the charging 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.
Correct Answer
B It decreases exponentially, approaching zero.
C It increases linearly.
D It remains constant after an initial rise.
Correct Answer

Option A is the correct answer.

Detailed Explanation

As depicted in graph (b) on page 19 and page 21 for a charging capacitor, the charge on the capacitor plates starts from zero and increases exponentially over time, approaching the final maximum charge (Qf) when the capacitor is fully charged.

Hint

A capacitor's primary function is to store charge. As it charges, the amount of stored charge increases.

Question Info