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Asked in GUJCET 2022 · Series and parallel combinations
Given: four capacitors of 4 μF; target 1.6 μF.
Idea: the target is less than one capacitor, so some series connection is needed; test the groupings.
Two in parallel: 4 + 4 = 8 μF.
Put this in series with the other two (each in series): 1/C = 1/8 + 1/4 + 1/4 = 5/8.
C = 8/5 = 1.6 μF.
So: two in parallel, with that pair in series with the other two.
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