Field line density

Electricity and Magnetism Level 1

At which point is the field depicted below stronger?

A They have the same magnitude B Cannot be determined

July Thomas by July Thomas , 30, USA

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3 solutions

July Thomas
Apr 5, 2016

The denser the field lines, the stronger the field.

4 Helpful 1 Interesting 1 Brilliant 0 Confused

Why does denser (or greater) the amount of field lines at some point correspond to a greater field at that point ? Is it a convention ? There must be something backing the convention other than saying it's obvious.. maybe some explaination involving a test charge ?

Aniruddha Bagchi - 2 years ago
Victor Kinyanjui
Feb 24, 2018

There electric field at A is denser than at B because the field lines are more closely packed. This greater density corresponds tp a greater field strength at that point

1 Helpful 1 Interesting 1 Brilliant 0 Confused

It is just like dealing with pressure

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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