A circular loop of wire of radius 10 cm carries a current of 6A. ...

[evelyn o bentley]

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.

Question 2

A 1000-turn toroid has a central radius of 4.2 cm and is carrying a current of 1.7 A. The magnitude of the magnetic field along the central radius is
 
  A)
 
  8.1  10-3 T.
  B)
 
  5.1  10-2 T.
  C)
 
  1.6  10-2 T.
  D)
 
  8.1  10-2 T.
  E)
 
  0.

[deja]

Answer to Question 1

A

Answer to Question 2

A

[evelyn o bentley]

Gracias!

[yeungji]

Excellent