Electric and magnetic field lines in 3D

Choose charges or magnets and see the field lines traced around them in three dimensions, with the direction of the field and neutral points marked.

Learn electric fields properly

StudyAI writes clear notes on any topic you study, with practice quizzes, past-paper questions explained, and interactive models like this one in the notes.

Get free notes and a quiz on this
Free to start. No card needed.

Questions students ask

Which way do electric field lines point?

Away from positive charges and towards negative charges: the direction a small positive test charge would be pushed.

Can field lines cross?

No. The field has one direction at each point, so two lines can never cross.

Free notes on electric fields

More physics tools

Projectile motion simulator
Set the launch speed, angle and height and see the trajectory, range, maximum height and time of flight. Metri…
Velocity–time graph: acceleration and distance
Build a velocity-time graph and get the acceleration from the slope and the distance from the area. Metric or …
Simple pendulum simulator
Change the length, amplitude and planet and see the period of a pendulum, solved exactly for large swings.
Lens ray diagram simulator
Draw ray diagrams for converging and diverging lenses: image position, real or virtual, magnification. Uses 1/…
All interactive tools
Use this on your own site or class page

Copy this code. It is free to use, as long as the link stays.