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 6A. The magnitude of the magnetic field at the center of the loop is

• 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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