The $\vec { B }$ Field at Point P Due to a 2

question 45

Multiple Choice

The $\vec { B }$ field at point P due to a 2.0-A current through a long,straight,thin wire is 8.0 μT.How far is point P from the wire? (μ₀ = 4π × 10^-7 T ∙ m/A)

• A)2.0 cm
• B)2.5 cm
• C)4.0 cm
• D)5.0 cm
• E)10 cm

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