Answer:
by using voltmeter
Explanation:
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.
The potential difference that should be measured in the circuit should be used voltmeter.
A voltmeter refer to the instrument that should be used for determining the electric potential difference that lies between the 2 points with respect to the electric circuit.
Also it should be connected in the parallel way. Mostly it contain the high resistance so it should be have the minimum current from the circuit.
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