We can observe that the magnetic field lines are in the form of concentric circles near the sides of the loop but towards the centre of the loop, the magnetic field lines become almost parallel which indicates that this part of the coil has a uniformmagnetic field. In other words, we can...
A student sets up an experiment with a straight wire carrying a current of 5 A. The current flows from the west to the east. Using the Right-Hand Rule, determine the direction of the magnetic field on the north side of the wire. Click here to show/hide answer To apply the Right-Hand...
The difficulties associated with the correspondence between the electric vectors E and D and the magnetic vectors B and H, when a current-carrying coil is considered as a magnetic dipole, are eliminated if it is considered, not as a simple dipole, but as a dipotential or dipole with a ...
When an external magnetic field is applied to a material, these current loops tend to align in such a way as to oppose the applied field. This causes all materials to be repelled by a permanent magnet; however, the resulting force is usually too weak to be noticeable. There are, however...
Magnetic permeability, change in the resultant magnetic field inside a material compared with the magnetizing field in which the given material is located. or the magnetic flux density B established within the material divided by the magnetic field stren
By inserting an iron core in a coil carrying current, the strength of its magnetic field will : View Solution Q2 When a soft iron core is inserted in a coil, the strength of the magnetic field: View Solution Q3 The strength of magnetic field produced by a current ca...
Fig. 13. Magnetic moment against magnetic field in typical ferromagnetic materials. Magnetic core memories were used in early mainframe computers, where a matrix of current carrying wires was used to program magnetic rings referred to as nuclei. Subsequent memory devices kept storing the information ...
It was observed that the magnetization losses were dependent on the coil current and that a peak of a curve of the loss factor vs. amplitude of the AC external magnetic field shifted to lower amplitude of the AC magnetic field as the coil current increased. This result suggests the full ...
current (A) α: pole inclination angle N: coils number of turns Ag: magnetic pole area (m2) View chapterExplore book Management and Control of Corrosion J.M.Race, inShreir's Corrosion, 2010 4.42.7.1.1MFL for corrosion MFL tools detect defects by the application of a magnetic field in ei...
In an even simpler transmitter scheme, an RF induction coil alone—without a permanent magnet—can also excite ultrasound vibrations in a distant metallic target. Here, the dynamic field BRF from the induction coil (at RF frequencies), together with the induced eddy current (being proportional to...