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Magnetic Effects of Current & Magnetism — Hard Difficulty (45 min | 50 Questions)
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Question 1
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1
$$4\pi\times10^{-4}\,\text{T}$$
2
$$2\pi\times10^{-4}\,\text{T}$$
3
$$4\pi\times10^{-4}/(2\sqrt{2})\,\text{T}$$
4
$$4\pi\times10^{-4}/\sqrt{2}\,\text{T}$$
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