What is an Ohmmeter?
An ohmmeter is a device that measures the amount of electrical friction generated as electrons pass through an electrical conductor. Also known as electrical resistance, its value is expressed in units of “ohm.” This measurement is governed by “Ohm’s Law,” which states that the current passing through an electrical circuit is directly proportional to the amount of voltage exerted. When written as an algebraic equation, this natural phenomenon would look like this: R = V/I, where R is Resistance, V is Voltage, and I represents Current. This illustration of the relationship between these values is attributed to the 19th century German physicist and teacher, Georg Simon Ohm. The mechanics of how an ohmmeter works is very simple. First, an ohmmeter needs to be able to generate an internal flow of current; therefore, it comes equipped with its own battery. The device also consists of two leads, from which the resistance between them is measured. The red lead is connected to the correspondin
An Ohmmeter is an electrical measuring instrument that measures electrical resistance, the opposition to the flow of an electric current. LDRs or Light Dependent Resistors are very useful especially in light/dark sensor circuits. Normally the resistance of an LDR is very high, sometimes as high as 1000 000 ohms, but when they are illuminated with light resistance drops dramatically.
