We all know that electricity is a form of energy. Electrical energy is currently used by various electrical devices to perform work.
In order for electrical appliances and electrical equipment to work, they need to transfer electrical energy, creating an electrical circuit that will provide a certain mode of operation. For each electrical device, the manufacturer sets the rated voltage, current and power.
For measuring the current (flow rate of charges) use a device called an ammeter. In addition, there are many different types of electrical measuring and test instruments that can be analog or digital.
Some of these meters will be changed to check for the presence of electrical current, regardless of AC or DC. Others are only used to measure current, voltage or resistance, while there are instruments that can measure all of these characteristics of a circuit or device.
An ammeter is a measuring device used to determine the current flowing in a circuit. The name of the device is directly related to the unit of measurement of current strength - "Ampere" - in honor of the French physicist and mathematician Andre-Marie Ampere. There are two main ways to measure current - one is based on electromagnetism and the other is based on the main theory of electricity, Ohm's Law. In fact, most modern ammeters are based on the fundamental theory of electricity, Ohm's Law. They provide a cost effective measurement.
Devices for electrical measurements are widely used in the energy sector, at enterprises of various industries, in medicine, for scientific research, in the repair of electrical equipment, and are also used as a means of accounting for electricity.
