A toroidal solenoid has a radius R = 0.5 m and a cross-sectional ...

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A toroidal solenoid has a radius R = 0.5 m and a cross-sectional diameter equal to 10 cm. When a current I passes through the coil of the solenoid, the magnetic field at the center of the solenoid has a magnitude B = 2 T.
 
  What is the largest value of the magnetic field in the solenoid for the same value of the current? A)
 
  3.5 T
  B)
 
  1.8 T
  C)
 
  2.2 T
  D)
 
  0.5 T
  E)
 
  2.8 T

Question 2

A wire of thickness d = 5 mm is tightly wound 200 times around a cylindrical core to form a solenoid. A current I = 0.1 A is sent through the wire. What is the the magnetic field on the axis of the solenoid?
 
  A)
 
  6.6  10-5 T
  B)
 
  2.5  10-5 T
  C)
 
  1.3  10-5 T
  D)
 
  3.6  10-5 T
  E)
 
  9.8  10-5 T

[Toya9913]

Answer to Question 1

C

Answer to Question 2

B

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TY

[Toya9913]

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