# 📱 ｜ [Pass-through mobile battery] Super convenient because it can supply power while charging. ### [Pass-through mobile battery] Super convenient because it can supply power while charging.

If you write the contents roughly
I bought a "Charmast mobile battery" with a large electric capacity of 23,800mAh.

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### Wikipedia related words

If there is no explanation, there is no corresponding item on Wikipedia. # Capacitance

Capacitance(Seiden Yoryo,British: electrostatic capacity) IsCapacitorSuch asInsulationWas doneconductorIn, how muchchargeIs a quantity that indicates whether or not is stored.Capacitance(Denkiyoryo,British: electric capacity), orcapacitance (British: capacitance).

## Definition

Capacitance is a unitVoltageStored aroundchargeGiven as.The quantity symbol is C ,UnitsFarad Use [F].1 on an object boltWhen the voltage of 1 is given CoulombIf you store the charge of, the capacitance of the object is 1 farad.

The capacitance of 1F is very large.Usually used around usElectronic partsIn the capacitor as, one millionth of 1F (100)-6) ofMicro farad [μF] or one trillionth (1).) ofPico Farad [pF] is often used.

## Capacitance of isolated conductors

ElectricalIsolatedconductorCapacitance of C , The electric charge stored in the conductor Q ,Point at infinityThe potential based on V Then, the capacitance is expressed by the following equation. If the conductor is spherical and electrically isolated, it will be as follows. ## Capacitance of parallel flat conductor

area S [m2], Interval d Between the two parallel conductors of [m],Permittivity ε OfDielectricThere is an object that is evenly filled.

On one side of the flat plate +Q [C], on the other -Q When the charge of [C] is applied, the plates are equal.electric fieldBecause it becomes E [V / m]Gauss's lawIt becomes as follows.  Also, the voltage between the flat conductors V [V] gives the following, and the capacitance of this object C [F] is required.  ## Capacitance synthesis

### Parallel connection of capacitance

When the capacitance is connected in parallel, the combined capacitance C Is each capacitance Ci Total voltage equal to [F] V Since [V] is applied, the charge at that time is Q If it is [C], it will be as follows. The combined capacitance is equal to the sum of each capacitance.

### Capacitive series connection

When the capacitance is connected in series, the whole V When a voltage of [V] is applied, the charges do not flow between each element at that time, so the charges are equal, so use that. Q Let it be [C].Its combined capacitance C [F] is each capacitance Ci Voltage to [F] Vi If [V] is applied, it will be as follows.    The combined capacitance is equal to the reciprocal of the sum of the reciprocals of each capacitance.

The voltage sharing of each capacitance is as follows. ## Elastanes

The reciprocal of capacitanceElastanes(British: elastance).UnitsEvery farad (F−1).

Not in SI units,Daraf (British: daraf) May be used.This is the reverse spelling of farad, the unit of capacitance, of the electrical engineer.Arthur Edwin Kennelly 1936 It is named after. Every 1 farad is equal to 1 daraf.