Technicians and electricians often need to troubleshoot faulty systems. Two common faults are open circuit and short circuit. Ammeters, voltmeters and ohmmeters …

## How to choose the range and Ohm’s law for the meter?

①Select the range of the instrumentWhen using an analog voltmeter or analog ammeter, the most accurate reading should be near the middle …

## What are ohms and ohmmeters?

In a circuit, the resistance to current is the resistance (R). The unit of measurement of resistance is ohm, which is represented …

## What is a power supply, voltage and voltmeter?

①PowerThere are many kinds of commonly used power supplies, here are 5 kinds:(1) A battery is a direct current (DC) power source …

## Circuit principle of renewable energy power system

In order for the power to work, there must be a completely closed circuit, so that the current flows from the power …

## What is the basic concept of electric current?

Electric current is defined as electron flow. Coulomb is a unit of measurement of electron flow. Now suppose that the observer can …

## Principles of current, charge, material and light properties

Electricity, light energy and wind energy are in many ways closely linked to one source, which is the atom. ①CurrentElectric current originates …

## What is the structure of atoms and atoms?

In electrical components, the atomic structure of the material determines whether current can easily flow through it. The two words “electricity” and …