A Wire Carrying a Current Is Shaped in the Form

question 13

Multiple Choice

A wire carrying a current is shaped in the form of a circular loop of radius 4.0 mm.If the magnetic field strength at its center is 1.1 mT with no external magnetic fields contributing to it,what is the magnitude of the current that flows through the wire?

• A)7.0 A
• B)28 A
• C)14 A
• D)17 A

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