Cracking the SAT Physics Subject Test

This can be written as

which can also be extended to more than 2 capacitators. As you can see, the
reciprocal of the capacitance of a collection of capacitors in series is found by
adding the reciprocals of the individual capacitances.

12. Given that C 1 = 2 μF, C 2 = 4 μF, and C 3 = 6 μF, calculate the
    equivalent capacitance for the following combination:

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