Exam 26: Direct Current Circuits

In the circuit shown the capacitor is initially uncharged and the switch is open.Determine how much charge would accumulate after switch S has been closed for 0.1 ms.

A 24-V battery is attached to a 3.0-mF capacitor and a 100-ohm resistor.If the capacitor is initially uncharged,how long will it take for the capacitor to reach a charge of 50 mC?

Assuming that a 1-F capacitor is charged to full charge with a 12-V car battery and is discharged through a resistor,what is the resistance necessary to produce a peak power output of 120 W in the resistor?