An electronic engineer needs a particular value of capacitance for his new design for the car courtesy light to dim at a particular rate when the car is locked remotely using a wireless key.
He needs a capacitance of exactly 12 micro Farads. Which of the four possibilities will give him that value?
1. Two capacitors in series, each of value 6 microFarads
2. Two capacitors in parallel, each of value 6 microFarads
3. Two capacitors in series, one of value 4 microFarads and the other of value 2 microFarads.
4. Two capacitors in parallel, each of value 24 microFarads
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