an ohmmeter can be used to measure what
A technician picks up a resistor with the following color bands: Color code: Org, Wht, Blu, Gld. Having forgotten the resistor color code, and being too lazy to research the color code in a book, the. technician decides to simply measure its resistance with an ohmmeter. Holding one lead of the resistor and. Ohmmeter- an ohmmeter is used to measure resistance. Connected in parallel or across, It can be used to check and measure the continuity of the circuit . When using an ohmmeter it does not require correct application polarity. Resistance test procedure: the purpose of the ω test is to measure the resistance or checking out if the circuit is short or open . Best results will be achieved if the component to be tested is removed from the circuit. If the component is left in the circuit, the readings could be affected by other components in parallel with the component to be tested. Note: Use range button to set measurement range. To determine the condition of a circuit or component. The higher the resistance, the lower the current flow, and vice versa. The significance of a resistance reading depends on the component being tested. In general, resistance of any one component varies a) over time and b) from component to component. If a circuit includes a capacitor, discharge the capacitor before taking any resistance reading. 2. Turn dial to ω (resistance, or ohms), which often shares a spot on the dial with one or more other test/measurement modes (continuity, capacitance or diode; see illustration below). On an analog meter, adjust the zero before use.  Turn your ohmmeter off when not in use, to protect… against voltage drain.  When your ohmmeter's battery is low, or your meter won't be used for a while, remove the battery to prevent damage to the meter from battery leakage. An Ohmmeter is a device that is used for the measurement of Electrical Resistance. An ideal Ohmmeter consists of an electronic circuit having a constant current [I] passing t…hrough a resistance [R] & another circuit that measures the voltage[V]. Thus from Ohm's Law R= V/I. A multimeter or a multitester, also known as a VOM (Volt-Ohm-Milliammeter), is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter can measure voltage, current, and resistance. Analog multimeters use a microammeter with a moving pointer to display readings. Digital multimeters (DMM, DVOM) have a numeric display, and may also show a graphical bar representing the measured value. Report Abuse. Hi, Benjav, An ohmmeter measures the resistance of a circuit, but it can't do that directly. So it applies a voltage across the circuit and measures the current that flows. Ohm's law states the voltage is equal to the current multiplied by the resistance (V = IR), so it can calculate the resistance from the known voltage and current. Basic ohmmeter use. This worksheet and all related ﬁles are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/, or send a. letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA. The terms and.
Resistance