What type of meter is connected in parallel in a circuit and why

Potential difference is measured using a device called a voltmeter . Just like ammeters, some types have a pointer on a dial, but most have a digital display. However, unlike an ammeter, you must connect the voltmeter in parallel to measure the potential difference across a component in a circuit.

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It is just simply called a Voltmeter, and it reads potential differences.

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