What is the unit of electric capacity? What is the unit of capacitor power

CapacitanceThe unit is mah,Battery capacity.

The unit of measurement is actually the total number of electrons in the battery that can be released for external use.

Mah is not a standard unit, but it can be easily used for measurement and calculation. For example, a 900mAh battery can provide a constant current of 300mAh for 3 hours.

To get a lithium-ion battery.

The correct situation of the use of electricity is only with a coulomb meter. Just like the principle of the water meter used for water metering in your home, you need to calculate the amount of charge flowing through to obtain the power usage of the lithium-ion battery.

How to get the amount of charge flowing through.

The only way to do this is to test the amount of current that flows through the loop per unit of time. If the measured current is constant, the measured current can be simply multiplied by time to get the amount of charge.

This can only happen in the laboratory, and the capacity of the battery is usually calculated by discharging a constant current, and the measured capacity is more accurate. If the measured current changes over time, then the current needs to be integrated to get the amount of charge, as is the case with the battery on a mobile phone, where the current changes all the time.

Capacitance is a fundamental physical quantity, symbol c, and the unit is farad (f) or law

The power of a capacitor is measured in var and kvar

The power units of a capacitor are: lack and thousand.

Popular Science: Calculation method of power of capacitor:

1. Capacitor power.

The voltage across the capacitor.

The current flowing through the capacitor.

2. Capacitor power.

The square of the current flowing through the capacitor.

Capacitive reactance of a capacitor.

3. Capacitor power.

The square of the voltage across the capacitor.

Capacitive reactance of a capacitor.

The unit of power of a capacitor isLackingwithThousands of scarks

The unit of electric capacity is farad (f) or law.

The unit of electric capacity is milliamperes, which is the unit of measurement of current. It is represented by the letter ma. A milliampere is one thousandth of an ampere.

Among them, ampere is the international uniform unit of current, which is represented by the letter A. Electric current is represented in physics by an English capital i. Electric current refers to the flow of a group of electric charges.

The magnitude of the current is called the current intensity, which refers to the amount of charge passing through a certain section of the wire per unit time, the expression i=q t, and the amount of electricity passing through one coulomb per second is called one ampere.

The role of capacitanceCapacitance is a measure of the capacitance of a capacitor, just as a resistor has a resistance value. The magnitude of the capacitance will affect the parameters of the circuit. For example, in an oscillation circuit, different capacitors will give different oscillation frequencies.

For example, a radio tune can receive stations of different frequency bands by changing the size of the capacitance and thus changing the resonant frequency. Your small capacitor is often used as a bypass capacitor.

CapacitanceUnits are:Farah（f）。

Capacitance, also known as "capacitance", refers to the difference in potential at a given level.

Generally speaking, the charge will move under the force in the electric field, and when there is a medium between the conductors, it hinders the movement of the charge and makes the charge accumulate on the conductor, resulting in the accumulation of charge storage and the amount of stored charge.

is called capacitance.

Capacitance refers to the ability to hold an electric charge. Any electrostatic field is made up of many capacitors, and where there is an electrostatic field, there is a capacitance, and the capacitance is described in terms of an electrostatic field. It is generally believed that

An isolated conductor forms a capacitance with infinity, and the conductor is grounded to the infinity and connected to the earth as a whole.

Calculation formula. The potential difference between two levels of a capacitor with 1 bank.

is 1 volt, and the capacitance of this capacitor is 1 farad, that is: c=q u. However, the magnitude of the capacitance is not determined by q (charged) or u (voltage), i.e. the capacitance is determined by the following formula: c = rs 4 kd.

where r is the relative permittivity.

s is the area facing the capacitive plates, d is the distance of the capacitive plates, and k is the electrostatic force constant. Common parallel plate capacitors, the capacitance is c = s d ( is the dielectric constant of the medium between the plates, = r 0, 0=1 4 k, s is the plate area, d is the distance between the plates).

mAh is the unit of measurement for the capacity of a battery.

Battery capacity is one of the important performance indicators to measure the performance of the battery, which indicates the amount of electricity emitted by the battery under certain conditions (discharge rate, temperature, termination voltage, etc.) (JS-150D can be used for discharge test), that is, the capacity of the battery, usually in ampere-hours (abbreviation, expressed in a·h, 1a·h = 3600C).

The battery capacity is divided into actual capacity, theoretical capacity and rated capacity chain according to different conditions, and the battery capacity c is the integration of current i in the time from T0 to T1, and the battery is divided into positive and negative poles. Shed closure or.

Capacity Units

Usually we talk about battery capacity in ampere-hours, which is based on a certain battery that has been determined. For example, we say what is the battery capacity of this mobile phone; What is the battery capacity of this battery car, it is for different batteries. The battery voltage has been determined, and the actual voltage is not considered, and only the ampere-hour can represent the capacity of the battery.

However, for batteries of different voltages, we can't simply use ampere-hours to represent the capacity, for example, a 12V 20Ah battery, a 15V20Ah battery, even if they are both 20Ah, the same power load is supplied, the equipment can work normally, but the duration is not the same, so the standard capacity should be in the unit of work.

The unit of electric repentance capacity is:Farah (f).orAct

The unit of power of the capacitor is the lack of a pena and a thousand of the nuclear stool

Capacitance unit conversion: capacitor Q, capacitance kvar, convert C capacitance uf, Q capacity = unit kvar, C capacitance = unit uf.

Formula: i, c=q, 1f=1000000 f.

Capacitance is a physical quantity that indicates the ability of a capacitor to hold an electric charge. The capacitance of a capacitor is called the capacitance of a capacitor to increase the potential difference between the two plates of a capacitor by 1 volt. The symbol for capacitance is c.

In the formula: i is the compensation current, the unit is a, and the u voltage unit = kv

Added: c = q u

c – the capacitance of the capacitor in farad (f).

Q - the charge carried by the capacitor, the unit is the cocurium (C).

u – the potential difference between the two stages of a capacitor, measured in volts (v).

1f = 1000000 uf (6 zeros) = 10000000000000 pf (12 zeros).

When the two ends of the capacitor are applied with a positive mass and a chord collapse beat-current voltage, the reactive power it emits is called reactive capacity. It is expressed by the following formula: q=uu xc=2 fcuu

For example, the rated voltage of 1kvar is calculated as the capacitance uf

q=2πfcuu

c=q/2πfuu

c（f）=1000(var)/2×

c=1000/50240000

c = simplified formula as.

c=q In fact, kv capacitance kvar conversion uf multiplied by the coefficient is good, and the error is not large, the coefficient is 20

1kvar×20=20 uf 10kvar×20=200 uf 20kvar×20=400uf

1 Farad (F) 1000 Micro Method (UF), 1 Micro Method 1000 Pico-Method (PF). Thank you.