This button hides or shows arrows in the field lines
This button hides or shows the grid.
This button reverses the direction of the curent.
Click anywhere on to show a plotting compass.
This button switches to a full screen view.
Use the simulation to find the effect of changing:
- The number of turns of wire in the coil
- The radius of the coil
- The direction of the current. Red circles show a current flowing out of
the screen; blue circles a current flowing into the screen.
Hold down the left mouse button to display a plotting compass.