In Fig. 25-29, find the equivalent capacitance of the combination. Assume that , and
The equivalent capacitance of the combination is 3.16
Using the equation 25-19, find the equivalent capacitance of C1 and C2. Then using 25-20, find the equivalent capacitance of the given combination.
Formulae are as follows:
Capacitors in series combination,
Capacitors in parallel combination,
From Figure, it can be seen that, and are connected in parallel. Therefore,
From the equation 25-19, the equivalent capacitance is given by,
From the above figure, we can see that and are connected in a series.
From the equation 25-20, the equivalent capacitance is given by,
Hence, the equivalent capacitance of the combination is 3.16
Therefore, by using the formula of capacitors in series and parallel combinations, equivalent capacitance can be determined.
The parallel plates in a capacitor, with a plate area of and an air filled separation of 3.00 mm, are charged by a 6.00 V battery. They are then disconnected from the battery and pulled apart (without discharge) to a separation of 8.00 mm. Neglecting fringing, (a) Find the potential difference between the plates (b)Find the initial stored energy (c)Find the final stored energy (d)Find the work required to separate the plates.
Figure 25-54 shows capacitor 1 , capacitor 2 , and capacitor 3 connected to a 12.0 V battery. When switch S is closed so as to connect uncharged capacitor 4 , (a) how much charge passes through point P from the battery and (b) how much charge shows up on capacitor 4? (c) Explain the discrepancy in those two results.
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