Question

A capacitor is a system of two conductors separated by an insulator. The two conductors have equal and opposite charges with a potential difference between them. The capacitance of a capacitor depends on the geometrical configuration (shape, size and separation) of the system and also on the nature of the insulator separating the two conductors. They are used to store charges. Like resistors, capacitors can be arranged in series or parallel or a combination of both to obtain desired value of capacitance.

A 100 μF capacitor is charged by a 12 V battery.

A capacitor of capacitance 4 μF is charged to a potential difference of 100 V. The energy stored in the capacitor is:

Three capacitors, each of capacitance 6 μF, are connected as follows: two of them are connected in parallel with each other, and the third capacitor is connected in series with this parallel combination. The equivalent capacitance of the entire system is: