Define current voltage resistance how to#

Multimeters are easy to use, so be sure to utilize them when you need to measure voltage.The flow of electricity through an object, such as a wire, is known as the current (I).

To measure voltage, you’ll need a multimeter. The concept is closely related to other concepts such as potential difference, current, and resistance, so it's important to develop an overall understanding of the subject. Voltage is an indicator of the ability to move electricity. Use a multimeter when you need to measure voltage. These values are known as instantaneous values, and they can be described by values such as the maximum value, minimum value, average value, peak-to-peak value, and RMS value. Since electricity in an AC current flows in both directions, the magnitude of the electricity varies moment by moment. Some circuits won’t operate properly if the battery is connected backwards.īut with a household electrical outlet, electricity will flow even if you reverse the left and right prongs of the plug. Electricity acts similarly: the concept of water height is analogous to electric potential, and electricity flows from places with high electric potential to places with low electric potential.Ī DC circuit must be connected to the battery’s positive and negative terminals in the proper manner. In other words, water flows from places with a high water height to places with a low water height. The water in rivers flows from mountains upstream to the ocean downstream. You can imagine it as a flow of water, like in a river. To understand voltage, you must first understand electricity.Įlectricity flows as a current. The difference between voltage and currentĪs introduced above, a simple description of voltage would be “the ability to cause electricity to flow.” If you’re like most people, you have trouble envisioning what voltage is since you can’t view it directly with your eyes.

Define current voltage resistance how to#

An understanding of voltage and of how to rectify associated issues is necessary in order to handle electronic devices appropriately and identify the underlying issues when problems occur.

However, electronic devices are designed to operate at specific voltages excessive voltage can damage their circuitry.īy contrast, too low a voltage can cause issues, too, by preventing circuits from operating and making the devices built around them useless. The amount of voltage is indicated by a unit known as the volt (V), and higher voltages cause more electricity to flow to an electronic device. Voltage describes the “pressure” that pushes electricity. This page provides an easy-to-understand introduction that explores how voltage and other terms are defined, how current and electric potential differ, and how voltage can be measured. If you’re like most people, you're familiar with the words but lack a detailed understanding of the underlying concepts. Overviewīefore you start using electronic devices, you need to develop a good understanding of current, resistance, voltage, and related topics. What is voltage? This page offers an easy-to-understand explanation of how voltage differs from current, the units in which it is measured, and other information. Bare board, Package, Populated Board Testing.Ground Resistance, Phase Rotation, Voltage Detection.Testers, Handheld Digital Multimeters (DMMs).Magnetic Field, Temperature, Sound Level, Lux.Solar Panel/Photovoltaic (PV) System Maintenance.RGB Laser/LED Optical Meters, LAN Cable Testers.Optical, PV maintenance, Telecommunication.Current Probes/Sensors, Voltage Probes, CAN Sensors.Electrical Safety Testers, Hipot/Insulation/Leakage Testers.Super Megohmmeters, Electrometers, Picoammeters.LCR Meters, Impedance Analyzers, Capacitance Meters.Compact Data Loggers, Temperature Data Loggers.Data Acquisition, Oscilloscopes, Memory Recorders.