In ferromagnetic materials the small regions that act like tiny ...

[jlmhmf]

In ferromagnetic materials the small regions that act like tiny magnets are called
 
  A)
 
  conductors.
  B)
 
  domains.
  C)
 
  iron filings.
  D)
 
  spins.
  E)
 
  ferromagnets.

Question 2

Which of the solenoids described below has the greatest magnetic field along its axis?
 
  A)
 
  a solenoid of length L, with N turns and a current I
  B)
 
  a solenoid of length L, with N/2 turns and a current I
  C)
 
  a solenoid of length L/2, with N/2 turns and a current I
  D)
 
  a solenoid of length 2L, with N turns and a current I/2
  E)
 
  a solenoid of length 2L, with 2N turns and a current 2I

[mistyjohnson]

Answer to Question 1

B

Answer to Question 2

E

[jlmhmf]

Thank you!

[mistyjohnson]

Always glad to help...