Calculate the Magnetic Field at the Center of a Circular

question 103

Multiple Choice

Calculate the magnetic field at the center of a circular current loop of radius R divided by the magnetic field at a distance R away from a very long straight wire carrying the same current value I. (Note the loop and wire are not in electrical contact.)

• A) 3.14
• B) 1.00
• C) 2.00
• D) 0.318
• E) 0.500

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