An uncharged capacitor and a 1 kΩ resistor are connected in series with a switch and a 6 V battery. At the instant the switch is closed, the voltage across the capacitor is
A 4.7 MΩ resistor is in series with a 0.015 µF capacitor. The combination is across a 12 V source. How long does it take the capacitor to fully charge?
