Author Question: A coil of wire containing N turns is in an external magnetic field that is perpendicular to the ... (Read 102 times)

nenivikky

  • Hero Member
  • *****
  • Posts: 516
A coil of wire containing N turns is in an external magnetic field that is perpendicular to the plane of the coil and it steadily changing. Under these circumstances, an emf  is induced in the coil.
 
  If the rate of change of the magnetic field and the number of turns in the coil are now doubled (but nothing else changes), what will be the induced emf in the coil? A) 2
  B) /2
  C) 4
  D) /4
  E)

Question 2

When a ferromagnetic material is placed in an external magnetic field, the net magnetic field of its magnetic domains becomes
 
  A) smaller.
  B) zero.
  C) larger.


Fayaz00962

  • Sr. Member
  • ****
  • Posts: 330
Answer to Question 1

C

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

nenivikky

  • Hero Member
  • *****
  • Posts: 516
Both answers were spot on, thank you once again




 

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

For a complete list of videos, visit our video library