# Dingfeng Capacitor -- What are the measurement formulas for capacitor capacity?

Q: Dingfeng Capacitor -- What are the measurement formulas for capacitor capacity?

A: If a capacitor is with 1 C quantity of electricity, and the potential difference between the two stages is 1 V, the capacitance of this capacitor is 1 F, namely: C=Q/U.

However, the capacity of the capacitor is not determined by Q(charge) or U (voltage), ie: C = εS / 4πkd. Where ε is a constant, S is the facing area of the capacitor plate, d is the distance of the capacitor plate,and k is the electrostatic force constant. For a common parallel plate capacitor, the capacitance is C=εS/d. (ε is the dielectric constant of the dielectric between the plates, S is the plate area, and d is the distance between the plates.)

Multi-capacitor parallel calculation formula: C=C1+C2+C3+...+Cn.

Multi-capacitor Tandem calculation formula: 1/C=1/C1+1/C2+...+1/Cn.

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