Its strength is directly proportional to the number of wire loops added to the coil.
The number of loops of the wire also affects magnetic fields. When there is no current flowing through the coil, there will be no magnetic field as well.
Increasing the current will increase the strength of the magnetic field. The strength of the magnetic field is proportional to the amount of current flowing through the wire. Since the electrons all move through the wire in one direction, there is a well-defined magnetic field surrounding the wire. The experiment done in the 19 th century showed that a wire carrying an electric current is actually a magnet. So the experiment concluded that electrons moving through a coiled wire creates a magnetic field– something that did not exist when the current was turned off.Ĭharged particles create magnetic fields only when they are moving. When the current was turned off, the compass would go back to its original north/south alignment with the Earth’s magnetic field. During an experiment, it was observed that when an electrical current flowed through a wire, a nearby compass would change directions. This was first observed in the early 19 th century.
Moving charged particles creates magnetic fields. Creating a Magnetic Field Using a Wire Coil
