व्हाट डू यू अंडरस्टैंड बाय द टर्म आफ पोटेंशियल डिफरेंस
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Explanation:
Potential difference = Work done/Charge moved = 250/20 = 125v
(d) A voltmeter is a device which is used to measure the potential difference between two points in an electric circuit. Voltmeter is always connected in parallel across the two points where the potential difference is to be measured.
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