Consider the circuit below. The capacitor has a capacitance of 16 mF and starts out uncharged. The switch is closed at time t At time t = 0 (immediately after the switch is closed), what is the current flowing out from the battery? A. long time after the switch is closed (and capacitor is fully charged), what is the current flowing out from the battery? A. What is the charge on the capacitor a long time after the switch is closed? mC.

You are working in an industrial plant. You have been instructed to double the capacitance connected to a machine. The markings on the capacitor, however, are not visible. The capacitor is connected to 560 volts and an ammeter indicates a current of 6 amperes flowing to the capacitor. What size capacitor should be connected in parallel with the existing capacitor? What is the minimum AC voltage rating of the new capacitor? What is the minimum DC voltage rating of the new capacitor? What is the minimum KVAR size that can be used in this installation?

A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating of 600 WVDC. The capacitor and resistor are connected to a 480-V, 60-Hz circuit. Is the voltage rating of the capacitor sufficient for this connection?

A capacitor uses air as a dielectric and has a capacitance of 3 F. A dielectric material is inserted between the plates without changing the spacing, and the capacitance becomes 15 F. What is the dielectric constant of this material?

4. In what form is the energy of a capacitor stored?

A postage stamp mica capacitor has the following color marks starting at the upper left dot: yellow, violet, brown, green, no color, and blue. What are the capacitance value, tolerance, and voltage rating of this capacitor?

5. A 20-ohm resistor and a capacitor are connected in series with a battery of 60 volts. At t = 0, there is no charge on the capacitor. Find the capacitance if the current at t = 5 seconds is 3/e amperes. Ans. 0.05 Farads

An uncharged capacitor and bulb are connected in series with a battery. Describe and explain what happens to thebulb when the switch is closed. What determines when the capacitor stops charging? What happens if the capacitoris turned around after the switch has been closed a long time? Include where charge is flowing the circuit. Alsodescribe the different roles of the capacitor and the battery.

The following figure represents an RC-Circuit with the switch. In Figure A, the capacitor is initially uncharged. In Figure B, the capacitor is initially fully charged. 1) Draw and label the current direction immediately after the switch is closed for each figure. 2) Consider Figure A. What is the voltage across the capacitor as t → 0? Explain. 3) Consider Figure B. Is the voltage across the resistor increasing, decreasing or staying the same as t → 0? Explain. A) B) R C

2. The capacitor in the following figure .......