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Magnetic Effects of Current & Magnetism — Mixed Difficulty (45 min | 50 Questions)
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Question 1
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1
$$\dfrac{\mu_0 NI}{2R}$$
2
$$\dfrac{\mu_0 NI}{4R}$$
3
$$\dfrac{\mu_0 NI}{R}$$
4
$$\dfrac{2\mu_0 NI}{R}$$
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