A wire carrying a current is shaped in the form of a circular ...

[SO00]

A wire carrying a current is shaped in the form of a circular loop of radius 3.0 mm. If the magnetic field strength that this current produces at the center of the loop is 1.1 mT,
 
  what is the magnitude of the current that flows through the wire? (0 = 4  10-7 T  m/A)
  A) 5.3 A
  B) 16 A
  C) 9.1 A
  D) 23 A

Question 2

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? (0 = 4  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

[emsimon14]

Answer to Question 1

A

Answer to Question 2

A

[SO00]

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[emsimon14]

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