While the strength of permanent magnets depends on the type of material that makes them up, an electromagnet's strength depends on the amount of current that flows through it. Permanent magnets can lose their magnetic properties such as their ability to give off a magnetic field when they're ...
An electromagnet is a type of magnet created by running an electric current through a conductive material. The electric current generates a magnetic field around the material, effectively turning it into a temporary magnet. The strength of the magnetic field produced by an electromagnet can be contr...
Lead and gold share the same weight; only an expert can tell the difference. Although it doesn’t share magnetic properties, lead can interact with magnetic fields by moving a powerful magnet past a leaded piece. Nickel Nickel is also found in the earth’s core, making it popular. It shar...
The ancient Greeks are known to be among the first people to have discovered lodestones. Magnetism may have seemed magical to them. After all, a magnetic field is invisible. But its effects can be felt. Over the past century, scientists have discovered that a magnet’s secret strength lies ...
20K Did you know that magnets produce a magnetic field? When you run an electrical current through this field you create an electromagnet. Why would you want to do this? What purpose would an electromagnet have? Read on to find out. Related to ...
Wire length in an electromagnet within the stator, along with voltage, determines the torque or strength of the motor. Also, the longer the wire, i.e., the more coils in the stator, the greater the magnetic field. This translates into increased power to rotate the rotor. ...
What is the magnetic field measured in? The strength of the magnetic field is expressed in units ofTesla (T) or microtesla (µT). Another unit, which is commonly used is the Gauss (G) or milligauss (mG), where 1 G is equivalent to 10-4T (or 1 mG = 0.1µT). There are a...