Explain why a soft-iron core increases the strength of an electromagnet. Define the conductivity and resistivity of a semiconductor material. What are the units of conductivity and resistivity? Which organic compounds are mostly good conductors of electricity?
What is the ultimate strength and how can it be determined? Explain why the voltage and resistance will change depending on the length of the material. State two ways by which the strength of an electromagnet can be increased. Name an example of a non-contact force. ...
Magnetic flux is a measurement of the total magnetic field that passes through a given area. Magnetic flux is a way of describing the amount of magnetic force on something of a given area. Answer and Explanation:1 A changing magnetic field induces an electric field. If a loop of wire is ...
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...
If you can make an AC electromagnet, that would also be a great addition for comparison. What kind of data will you put on the disk in order to see if the data has been corrupted? Perhaps some bitmap images would work well, with a simple pattern of black and white squares. They are...
south, the atom becomes magnetic. And because electrons rotate or spin around the nucleus of an atom, it also is possible for an atom to possess a magnetic field when the poles aren't all in alignment due to the electrons' spinning, which makes the atom much like an electromagnet. ...
A solenoid is an electromagnet formed from a wire that carries current. Electromagnets have magnetic fields created from currents. The wire of a solenoid is often formed into a helical coil, and a piece of metal such as iron is often inserted inside. Whe
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A permanent magnet is a magnet that always behaves like a magnet, as opposed to an electromagnet, that only acts like a magnet if...