A Circular Loop of Wire of Radius 10 Cm Carries

question 4

Multiple Choice

A circular loop of wire of radius 10 cm carries a current of 6.0 A. What is the magnitude of the magnetic field at the center of the loop? (μ0 = 4π × 10^-7 T ∙ m/A)

• A) 3.8 × 10^-5 T
• B) 3.8 × 10^-7 T
• C) 1.2 × 10^-5 T
• D) 1.2 × 10^-7 T
• E) 3.8 × 10^-8 T

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