Question

1. A 5 µF, a 7 µF, and an unknown capacitor CX are connected in parallel between points a and b in a circuit. Draw a circuit diagram.

a. If the equivalent single capacitor has a capacitance of 24 µF, what is the value of CX

b. if the circuit is connected to a power source of 20 V across points a and b, what are the charges on each of capacitors and on the equivalent capacitor?

c. What is the voltage across each of these capacitors?

d. How much electrical energy is stored in each of the individual capacitors and the equivalent capacitor.

e. Instead of the capacitors in parallel if we connect them in series between the two points a and b then draw a circuit diagram for this configuration.

f. What will be the unknown capacitor value for CX if the equivalent capacitance for the circuit with the above three capacitors in series is 1.687 µF

g. What are charges and voltage differences across each of the capacitors when they are in parallel connection and across the equivalent capacitor for this configuration?

Answer 1