If the component being measured is connected in any way to a power source, turn off the power source. There are various kinds of resistors some are fixed while others are variable. A resistor is an electrical component that is used to impede the flow of current. Resistance may be derived from voltage and current is given that both are known using the Ohm’s law, or it may be measured using a simple instrument like an ohmmeter or a compound instrument like the multimeter. Resistance is usually measured in ohms denoted Ω. These factors are essential in determining whether a material is a good conductor or a poor conductor or in other words, an electrical insulator or an electrical conductor. Several factors come into play to influence the resistance of a circuit or device, and these include material, thickness, and length. They are used to troubleshoot the problems in appliances, motors, and circuits.Įlectrical resistance is the opposition a device offers to the flow of current. It serves to detect faults and complex diagnostics. It is handheld and usually has a digital display for reading the voltage-current or resistance. It may be used to measure resistance, current or voltage, and it is for this reason, also called a volt-ohm-milliameter or VOM. 
In other words, it serves as a one-stop-shop for all your electronic needs.
A multimeter is an electronic instrument that aggregates several measurement functions in one, hence the name ‘multi’ meter.
0 kommentar(er)
