P7-magnetism And Electromagnetism

Question 1

What happens when two poles are together

Answer 1

Two poles that are the same will repel each other

Tow unlike poles will attract each other

Question 2

There are two types of magnets

Answer 2

Induced and permanent

Question 3

What are permanent magnets

Answer 3

Produce their own magnetic field

Question 4

What are induced magnets

Answer 4

Becomes magnetised when in another magnetic field

Question 5

What is the coil of a wire called

Answer 5

A solenoid

Question 6

What is the right hand thumb rule

Answer 6

Using right hand, point thumb in direction of current and curl fingers

The direction of your fingers is the direction of the field

Question 7

What is magnetic flux density

Answer 7

How many field lines there are in a region

Question 8

What is Fleming’s left hand rule

Answer 8

Using your left hand, point your first finger in the direction the field

Point your second finger in the direction of the current

Your thumb will then point in the direction of the force