You have three capacitors, each of 2 μC. In which of the following combinations of the three capacitors, is the resultant capacitance 3μC?
Correct answer: B. Two capacitors are in series, one in parallel
- A. All three capacitors in series
- B. Two capacitors are in series, one in parallel
- C. Two capacitors are in parallel, one in series
- D. All three capacitors in parallel
Explanation
C1 and C2 are in series Capacitance (C12) of C1 and C2 will be, C12 = 1/C1 + 1/C2 C12 = 1/2 + 1/2 C12 = 1C C3 is parallel to C1 and C2 So Total Capacitance will be CTOTAL = C12 + C3 CTOTAL = 1 + 2 CTOTAL = 3C
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Electrostatics describes forces between charges through Coulomb's law, electric fields and field intensity, then uses electric potential to measure energy per unit charge. Capacitors store charge and electrical energy, with capacitance depending on geometry and dielectric material, not simply on the amount of charge present.
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