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Mezbah Uddin:
Moving 2.5 × 10–6 coulomb of charge from point A to point B in an electric field requires 6.3 × 10–4 joule of work. The potential difference between points A and B is approximately
1.6 × 10–9V
4.0 × 10–3V
2.5 × 10–2V
1.0 × 10–14V
Correct Answer Number: 3

Explanation: V=W/q. work and charge are both given in the problem.
 :o

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