Electro magnets Electromagnets are created by running an electrical current through a conductive metal. An electrical current causes the rapid movement of electrons, which creates a magnetic field. Electromagnetic fields can be created by running an electrical current through any metal, including non-fer...
Why do magnets attract or repel? Why does a negative charge move from low to high potential? Define electrostatic. Why can't all materials become superconductors? Which atom in ClF is more negatively charged? Why do the oppositely charged plates of a capacitor attract each other?
If bar magnets are allowed to attract and stick long sides together, what happened to the total strength of the magnetic field and why? Why do we weigh more at the poles? Explain how magnetic flux can be zero when the magnetic field is not zero. Why do we prefer steel or alnico ...
The stack of magnets works as one big bar magnet. Do the poles change when you divide the magnet into pieces? Explain how a single magnet can repel the rest of the stack, but still stick to the other surface. ...
'm sure seemed like a very simple question in his head: If you hold two magnets with the same poles close, you'll feel a force pushing them away, and if they have opposite poles, they will snap together. "What I want to know is, what's going on between these two bits of metal?
Magnetism (where the piece in question attracts other iron objects) can be removed by degaussing, generally pretty easily. But when people talk about iron being "magnetic" they usually actually mean "ferromagnetic" (a magnet will attract the item in question). I do not know of any way of ...
“Can Canada expedite projects, as the prime minister has proposed, while providing regulatory predictability to attract the capital to build much-needed infrastructure?” he continued. “This is what we will ultimately be judged by: can we deliver the goods countries need to be able to live th...
Pot magnets with eyebolt are very versatile product for hanging most things, we can attach them to metal surface without marking, meanwhile we can easily remove the eyebolt, generally we can attract steel plates, hang pot plants, keys, hats, umbrellas, tools, lig...
Why do British put plastic tubs in the sink? If you have a single sink, it'sa good idea to have a space down which you can spill plates without makingthe washing up water murky. A plastic bowl is a less hard surface for glasses than a metal sink. ...
Why do we have free electrons in metal and not in insulators? What makes them be an insulator/semiconductor/metal? Why are the magnetic fields of superconducting magnets often stronger than those of conventional magnets? Explain the space c...