Capacitance
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8 Terms
Define capacitance.
The ability to store electrical charge (unit: Farad).
What is the formula for charge stored in a capacitor?
(Q = CV) (Charge = Capacitance × Voltage).
How do you calculate total capacitance for capacitors in series?
1/Ct = 1/C1 + 1/C2 + …
How do you calculate total capacitance for capacitors in parallel?
Ct= C1 + C2 + …
Why are electrolytic capacitors polarized?
Their dielectric is formed chemically—reverse voltage can destroy them.
Name two dangers of capacitors.
High-voltage discharge, explosion risk if misconnected.
Three capacitors (2µF, 4µF, 6µF) are in series. Find total capacitance.
1/Ct = 1/2+ 1/4+ 1/6 = Ct = 1.09µF
A 10µF capacitor charged to 100V stores what energy?
W = ½ CV² = 0.5 × 10 × 10µF x 100² =0.05J.
Note 
Flashcards (23)