P. 4344. A capacitor and a resistor of big resistance, through which the capacitor is charged slowly, are connected in series to a battery of electromotive force 4.5 V. The voltage across the capacitor is 3 V one minute after the closing the circuit. What will the voltage across the capacitor be
a) after 2 minutes;
b) after 3 minutes?
Deadline expired on 10 May 2011.