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Question

If medium between two charges is air, then value of constant k in SI units will be

[A] 5 × 109 Nm²C-2
[B] 7 × 109 Nm²C-2
[C] 8 × 109 Nm²C-2
[D] 9 × 109 Nm²C-2
Answer & Explanation

Answer: 9 × 109 Nm²C-2

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