The sum ofthe potential difference across the capacitor and resistoris away
Constant, so Vc 十 MRg 三委. As charge flows to the Capacitor, the potential difer:
ence across it increases, which means that the Potential difference across及誠
the current through the circuit, must decrease. In this circuit, the current /當
Credyey the charge on the capacitor, and therefore 7 二 十ZO/2/. As the currit
decreases, we expect the Tate at which the capacitor charges also to decrease
When the potential difference across C Teaches 儿, the potential difference acr0S
AR 1s zero: The current Stops flowing, and the charge on the capacitor ha5出
maximum value Oo = Cx,
When 7 = +Z0/dr is used in the loop rule, we find
