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Question
Which of the following graphs shows the variation of magnetic field B, with distance for a long current carrying conductor?
Options
MCQ
Graph
Solution
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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Magnetic Field Due to a Current: Biot-savart Law
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