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ولت‌سنج

File:Voltmeter_hg.jpg · Wikimedia Commons · See Wikimedia Commons

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ولت‌سنج

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thumb|Demonstration analog voltmeter

AI overview

A voltmeter is a device that measures the electrical potential difference (voltage) between two points in an electrical circuit. It's useful because knowing the voltage helps people understand how much electrical energy is available or being used in a device or system.

AI-generated from the Wikipedia summary — may contain errors.

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