Elenco Basic Electronic Experiments - Manual (Page 22)

EXPERIMENT #10: LARGE DOMINATES SMALL - CAPACITORS IN PARALLEL
Now you have capacitors in parallel, and you can probably predict what will happen. If not, just think about the last
experiment and about how resistors in parallel combine, or think in terms of the water diagram again. Connect the circuit
according to the schematic and Wiring Diagram and press the switch several times to see.
Capacitors in parallel add together just like resistors in series, so here 10 μF + 100μF = 110μF total circuit capacitance. In
the water diagram, we are stretching both rubber diaphragms at the same time so it will take longer than to stretch either
one by itself. If you like you may experiment with different resistor values as you did in experiment #8. Although you do
have two disc capacitors and a variable capacitor (which will be discussed later) there is no point in experimenting with them
now, their capacitance values are so small that they would act as an open switch in any of the circuits discussed so far.
22
+9V
3.3k Ω
10k Ω
100 μF 10 μF
+
-