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

Question 45

Multiple Choice

The B⃗\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

Correct Answer:

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