The ampere, volt, and ohm are the fundamental units of **a simple electric circuit**. A circuit is anything that connects two points so that current can flow from one to the other.

Amperes are measured in amps. One amp is equal to 100 milliamperes or 0.001 amperes. Amps are specified by the symbol α or Ω. Voltage is the force driving electrons through a conductor such as a copper wire. The voltage across any two points within a conductor is called the line voltage or branch voltage. Electric power is the ability to do work; it is the rate at which work is done. Power is calculated by multiplying voltage by current. For example, if there is 1 amp flowing into a point across from a 2-volt source, then the power is 1 watt (1 amp * 2 volts = 1 watt).

Voltages come in degrees. Degrees are measured in degrees. Current flows in circles; power, in lines. Angle brackets (< and >) are used to indicate a range of values: for example, **5 degrees** < $\theta$ < 20 degrees means that $\theta$ lies between 5 degrees and 20 degrees. Angles are specified by words followed by **angle quotes** (" ").

The volt, ampere, and ohm are the standard units of electrical measurement used to indicate voltage, current, and resistance. The watt is a unit of power, which is the flow of electricity through a conductor. A wattage reading tells you how much power is being delivered by a battery charger, for example.

The volt is defined as the amount of potential energy per **unit mass** of electrons flowing through a conductor. The electron is the smallest particle that can conduct electricity, so a single electron flows through **a normal wire** without any problems. Atoms in the metal of a wire may block some electrons from passing through, but many more will be available if needed. The number of electrons flowing through a conductor is called its current strength. A strong current is equal to **many electrons** per second, while a weak current is less than one electron per second.

The ampere is defined as the flow of electric charge through a conductor. Like the volt and ampere, this unit has two different definitions depending on whether you are talking about direct or alternating current (dc or ac). If you are dealing with direct current, then an amp is the amount of current required to pass one milliampere through a resistor for one hour.

"Definition of electrical units" voltaic (V) The electrical unit of voltage is the volt. The electrical unit of current is the ampere (A). Ohm (O) The electrical unit of resistance is the ohm. Wattage (W) The electrical unit of power is the watt. Milliwatt-decibel (dBm) A decibel-milliwatt, or dBm, is a unit of electric power measured on a logarithmic scale with 1 mW as the reference point. Microwatt-milliwatt-second (ms) The microvolt-microwatt-milliwatt-second is a unit of electric potential difference between two points separated by a distance of one millionth of a meter. It is equal to one ten thousandth of a volt per milliwatt second.

Electricity is the flow of electrons through a conductor such as **a copper wire**. Electric circuits use components to break up the flow of current into smaller quantities that can be manipulated using **other components**. Electricity is transmitted to homes and businesses across large distances using power lines. Power lines are hanging cables that transmit alternating current (AC) at high voltage from a power station to local substations and then on to houses and factories. A special transformer at the substation lowers the voltage before it enters **the public network**, which feeds into houses via service connections or directly into industrial premises.

The service panel is the distribution center for the household electrical system. It usually measures about 1 by 2 feet, and it can be located either inside or outside a house. The meter installed on the exterior of your house measures how much electricity you use, which determines your bill.

Voltage, current, and resistance are the three fundamental electrical quantities. Voltage is expressed in volts and its variants. Current is expressed in amperes and its variants. Resistance is expressed in ohms and its variants.

Voltage is the potential difference between **two points**. Current is the flow of electrons through a conductor. Resistance is the opposition that resists the flow of current. The more resistance there is, the more voltage is needed to push the current through it.

The electric force is the product of an electric field and the negative gradient of the electric potential energy function. At any point in space, there is an electric field due to the difference in electric potential between two objects. This electric field tries to pull the objects together, i.e., it pushes them away from each other.

The electric force on a particle at **a given location** is proportional to the value of the electric field at that location. If the particle is positive, then its electric field will try to pull other particles with itself. This is why particles tend to aggregate into collections called clouds or plates. These are just different names for the same thing: a collection of particles having the same sign for their charge.