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electromagnetic solved problems \[ B = \frac{\mu_0 I}{2 \pi r} \] where \( \mu_0 = 4\pi \times 10^{-7} \, T \cdot m/A \) Calculation: \[ B = \frac{4\pi \times 10^{-7} \times 5}{2 \pi \times 0.1} = \frac{2 \times 10^{-6} \times 5}{0.2} = \frac{10 \times 10^{-6}}{0.2} = 50 \times Oct 3, 2025 Read more →
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