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प्रश्न
Which of the following graphs shows the variation of magnetic field B, with distance for a long current carrying conductor?
विकल्प
MCQ
आलेख
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उत्तर
Explanation:
B = `µ_0/(4pi) xx (2I)/r` (For infinitely long conductor)
`B prop 1/r`
Hence, graph (C) is correct.
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