How a Generator Works When an electric current flows through a wire, it generates a three-dimensional magnetic force field around the wire, similar to that surrounding a bar magnet. Magnets are ...

A magnetic field is invisible, but it can be detected using a magnetic compass. A compass contains a small bar magnet ... needle direction each time join the points to show the field lines The ...

The earth behave likes a huge bar ... magnet inside the earth and vice versa. Magnetic Element of the Earth’s Magnetic Field These are the quantities which completely describe magnitude and dire ...