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10 questions from this quiz
4π×10−74\pi \times 10^{-7}4π×10−7 T m A⁻¹
Concentric circular loops
Attractive
Repulsive
μ0I1I22πr\frac{\mu_0 I_1 I_2}{2\pi r}2πrμ0I1I2
2×10−72 \times 10^{-7}2×10−7 N m⁻¹
Equal magnitude, opposite direction
90°
μ0I2πr\frac{\mu_0 I}{2\pi r}2πrμ0I
Coulomb, gravitational, and magnetic
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