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The work done in moving 5 C of charge between two points kept at a potential difference of 4 V is
A0.8 J
B1.25 J
C9 J
D20 J
Answer & Solution
Correct answer: D. 20 J
1. Use V = W / q rearranged to W = V * q.
2. W = 4 V * 5 C.
3. W = 20 J.
4. Hence option A is correct.
_Source: Selina Concise Physics Class 9, Ch 9 Current Electricity (Mistral OCR'd PDF), section on potential difference_
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