Lab22_MagneticMenageriefillin
... Here you see a copper tube and two balls; one of steel and one of neodymium. First, satisfy yourself that the copper itself is not magnetic using a bar magnet. Drop the steel ball through the tube. Then drop the neodymium ball through the tube. What do you observe? ...
... Here you see a copper tube and two balls; one of steel and one of neodymium. First, satisfy yourself that the copper itself is not magnetic using a bar magnet. Drop the steel ball through the tube. Then drop the neodymium ball through the tube. What do you observe? ...
Magnetic fraud
... electric current will flow in the same direction, the frames will mutually attract and align in the same plane. You could say that these frames with their magnetic poles N and S coincide. And what happens if at such a moment in one frame you switch the direction of the electric current to the opposi ...
... electric current will flow in the same direction, the frames will mutually attract and align in the same plane. You could say that these frames with their magnetic poles N and S coincide. And what happens if at such a moment in one frame you switch the direction of the electric current to the opposi ...
Motor Effect - Seattle Central
... the electric generator. The electric current you generate by moving this single loop of wire through the weak magnetic field of the disk magnets is too weak to detect with all but the most sensitive of microammeters. ...
... the electric generator. The electric current you generate by moving this single loop of wire through the weak magnetic field of the disk magnets is too weak to detect with all but the most sensitive of microammeters. ...
General Physics II
... The radius of the circular path of the protons can be found by noting that the centripetal force (keeping them in a circular path) must be provided by the magnetic force. Note that a proton has charge e and mass mp , and let the proton’s velocity be v. Also recall that magnetic forces do no work, so ...
... The radius of the circular path of the protons can be found by noting that the centripetal force (keeping them in a circular path) must be provided by the magnetic force. Note that a proton has charge e and mass mp , and let the proton’s velocity be v. Also recall that magnetic forces do no work, so ...
Magnetism
... If a current-carrying wire is bent into a loop, the magnetic field lines bunch up. If you add another loop and another, the magnetic field becomes more and more concentrated. This coil is called an electromagnet. ...
... If a current-carrying wire is bent into a loop, the magnetic field lines bunch up. If you add another loop and another, the magnetic field becomes more and more concentrated. This coil is called an electromagnet. ...
physics_electricity_in_the_home - HSC Guru
... 2. describe the functions of circuit breakers, fuses, earthing, double insulation and other safety devices in the home Circuit breakers work by shutting off electricity when the current exceeds a safe level. Fuses do the same thing but work by allowing the fuse wire to melt when the current is too h ...
... 2. describe the functions of circuit breakers, fuses, earthing, double insulation and other safety devices in the home Circuit breakers work by shutting off electricity when the current exceeds a safe level. Fuses do the same thing but work by allowing the fuse wire to melt when the current is too h ...
Electromagnet
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number of closely spaced turns of wire that create the magnetic field. The wire turns are often wound around a magnetic core made from a ferromagnetic or ferrimagnetic material such as iron; the magnetic core concentrates the magnetic flux and makes a more powerful magnet.The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding. However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field.Electromagnets are widely used as components of other electrical devices, such as motors, generators, relays, loudspeakers, hard disks, MRI machines, scientific instruments, and magnetic separation equipment. Electromagnets are also employed in industry for picking up and moving heavy iron objects such as scrap iron and steel.