23.1 - Magnetic Field Lines Flashcards Preview

Physics - Topic 23 - Magnetic Fields > 23.1 - Magnetic Field Lines > Flashcards

Flashcards in 23.1 - Magnetic Field Lines Deck (9)
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1

What is a magnetic field?

A region in which magnetic materials feel a force

2

On a bar magnet, what direction do magnetic fields act in?

From north to south

3

What are north and south called on a magnet?

The poles

4

Where is the magnetic field strongest?

Where the magnetic field lines are closest together

5

What is a neutral point?

A point at which two magnetic fields cancel each other out

6

What else can produce magnetic fields?

Electric currents

7

What shape are these lines?

Closed loops

8

What symbol shows current into a page?

A cross in a circle

9

What symbol shows current out of a page?

A dot in a circle