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What is a Voltmeter?

Your car’s battery carries a charge measured in volts. The battery produces this charge through the chemical reaction produced when a positively charged lead pole and a negatively charged lead pole are immersed in a sulfuric acid solution. The charge builds to a given potential regulated by the amount of oppositely charged poles used. The charge in a battery is measured using a voltmeter.

A voltmeter is a device…

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