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A wire carrying 100A is bent into a circular loop of 5cm radius. The flux density at its centre in tesla is

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22.56 × 10^–4

12.56 × 10^–4

40.06 × 10^–4

23.08 × 10^–4

answer is C.

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Detailed Solution

$B = \frac{μ_{0} i}{2 r}; B = \frac{4 π \times 10^{- 7} \times 100}{2 \times 5 \times 10^{- 2}} = 12 .56 \times 10^{- 4} T$

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