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Question 2 (Magnetic Field due to a wire)
A long straight wire carries a current of 4 A. What is the magnetic field strength at a distance of 0.02 m from the wire? (μ₀ = 4π × 10⁻⁷ T·m/A)
(A) 2 × 10⁻⁵ T (B) 4 × 10⁻⁵ T (C) 6 × 10⁻⁵ T (D) 8 × 10⁻⁵ T
Answer: B (4 × 10⁻⁵ T) While there isn't a direct "
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