|
|
 |
|
|
 |
|
What is a magnetic field?
|
|
A magnetic field is a region of forces that exists around a magnet. The field can be drawn as a series of curved lines, called lines of force, joining the magnet's north and south poles. The Earth behaves like a magnet. Its magnetic field, caused by electric currents inside the liquid part of its core, stretches thousands of kilometres into space.
|
| |
Previous:
Back
|
Book:
Best Ever Q&A
|
Section:
Science & Technology
|
Chapter:
Electricity & Magnetism
|
|
|
|
 |
|
|
