The capacity of a cell Student activity Play

The capacity of a cell Animation Play

The Earth's magnetic field Whiteboard exercise Play

The Earth's magnetic field Animation Play

The Earth's magnetic field Student activity Play

The length of the side Whiteboard exercise Play

The local magnetic field of the Earth Whiteboard exercise Play

The local magnetic field of the Earth Student activity Play

The magnetic field around a circular conductor Animation Play

The magnetic field of a coil Student activity Play

The magnetic field of a coil Whiteboard exercise Play

The magnetic field of a coil Student activity Play

The magnetic field of a coil Animation Play

The magnetic field of a flat coil Student activity Play

The magnetic field of a flat coil Whiteboard exercise Play

The magnetic field of a loop Animation Play

The magnetic field of a loop Whiteboard exercise Play

The magnetic field of a loop Student activity Play

The magnetic field of the Earth Student activity Play

The magnetic field of the Earth Simulation Play

The magnetic field of the Earth Student activity Play

The magnetic field of the Earth Whiteboard exercise Play

The magnetic field of the Earth Whiteboard exercise Play

The magnetic field of the Earth Animation Play

The operation of a cell Animation Play