Consider two current-carrying circular loops. Both are made from ...

[armygirl]

Consider two current-carrying circular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other.
 
  Compared to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is A) 8 times stronger.
  B) 16 times stronger.
  C) 4 times stronger.
  D) 2 times stronger.
  E) times stronger.

Question 2

The adoption of very similar streamlined body shapes by both sharks and dolphins provides evidence for
 
  A) cross-breeding
  B) convergent evolution
  C) genetic mutations
  D) life originating in the oceans

[ong527]

Answer to Question 1

C

Answer to Question 2

B