Magnets And Electro Magnets

Question 1

What is the difference between a bar magnet and an electro magnet

Answer 1

An electromagnet can be turned off but a bar magnet can’t

Question 2

Metals that can be turned into magnets

Answer 2

Iron, nickel and cobalt

Question 3

How can you test whether something is a magnet or not

Answer 3

If it repels another magnet

THIS IS THE ONLY WAY!!!!

Question 4

How do you draw a magnet field diagram

Answer 4

Boobs with a line in the middle

Question 5

Key points when drawing a magnetic field diagram

Answer 5

Field lines have arrows on them

Field lines come out of the north and enter the south

Question 6

Unlike pole attraction and like pole attraction

Answer 6

Unlike pole attraction- There will be lots of iron filings in the middle

Like pole repulsion- There will be no iron filings in the middle

Question 7

How can a magnet be destroyed

Answer 7

Heating, hammering or jarring.

This is because heating a magnet past its curie point will destroy the long range ordering. In the case of heating energy is provided so the magnetic poles can break free of their initial order.

Question 8

What is a magnet

Answer 8

A piece of iron or other material which had its component atoms so ordered that the material exhibits properties of magnetism such as attracting other pieces of iron.