Name the device used to measure the potential difference.
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Solution
Voltmeter:
A voltmeter, also known as a voltage meter, is an instrument used for measuring the potential difference between two points in an electrical or electronic circuit.
A voltmeter is connected in parallel to a circuit, across which the voltage is being measured.
As we know, in a parallel circuit the voltage is the same across each element, so the voltage across the voltmeter and the load is the same hence, the voltmeter measures the voltage across the load.
Thus, a voltmeter is used to measure the potential difference.