Circuit A consists of a resistor in series with a single capacitor
PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
Circuit A consists of a resistor R in series with a single capacitor C. Circuit B is identical except that a second identical capacitor C is connected in parallel with the first capacitor (both capacitors remain in series with the same resistor R). Which statement correctly compares the time required for the capacitors in the two circuits to reach 63 percent of their respective final charges?
(a) Circuit B charges faster because its equivalent capacitance is larger.
(b) Both circuits take the same time because the resistor is the same in each.
(c) Circuit A charges faster because its equivalent capacitance is smaller.
(d) Circuit B charges faster because its equivalent capacitance is smaller.