When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet. The field inside a solenoid is strong and uniform. The small magnetic field caused by ...

Electromagnets - AQA Electromagnetism is due to the magnetic fields around electric currents. The fields can cause forces with other nearby magnets which can be used to make motors spin and ...

Now, researchers at the University of Tsukuba have developed a simple, nondestructive method to verify a battery’s ...