More expensive versions can measure other parameters such as capacitance, transistor gain, and diode forward voltage.Ī multimeter comes in two different types: an analog and a digital. A typical multimeter can measure voltage, current and resistance. In fact, it can be used to measure multiple electrical properties. A multimeter basically checks the electrical resistance within a circuit. A multimeter is a handheld instrument, more like electronics troubleshooting tool that you can use to diagnose the defective part of a circuit. If you notice a faulty appliance in your home and you are not sure what’s causing the fault, the best way to find out is to use a multimeter. The voltage is represented using the letter ‘V’, and the sensitivity of a voltmeter is usually specified in ohms/volts. It is designed in such a way so as to offer minimum disturbance to the circuit. A voltmeter measures voltage by passing current through a resistance. A standard voltmeter used in the laboratories employs electromechanical mechanism for functioning and typically measures in the 1000 – 3000 volts range. It is designed in such a way that when connected in parallel to the circuit for measuring voltage it does not take appreciable current.Ī voltmeter not only measures voltage but also current and resistance. A voltmeter works on the same basic principle as an ammeter, except a voltmeter has a high resistance. And then there are some voltmeters that can read both. While some voltmeters are designed to work well with direct current, some voltmeters are better for measuring alternating current. It accurately measures the difference in electric potential between two points in a circuit. Voltmeter is an electrical instrument that is used to measure voltage of either direct or alternating electrical current in volts.
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