No. Any current produces a magnetic field. Look at Maxwell's equations.
yes Batteries only produce direct currents
Only Single phase induction motors need capacitor to star it, because of single phase. With the help of capacitor in the starting winding circuit it is easy to create rotating magnetic field inside motor which is responsible for running of motor.
Magnetic fields are produced because of moving electric charges, and visualizing the very complex mathematical relationships that fall under the magnetic field might become much easier if magnetic field lines were used. A higher density of field lines means a stronger magnetic field. Keep in mind that those lines do not actually exist; they are drawn only to visualize the strength of the magnetic field.
Both, E=Es + Ev = cB therefore, B= Es/c + Ev/c = Bs + Bv. The electric and magnetic fields are quaternion fields consisting of a scalar field and a vector field. Contemporary Physics has not realized this yet. Correct Relativity Theory is a manifestation of quaternion fields, consisting of a scalar field and three vector fields. This shows up in the Energy Momentum four vector, E= Es +cmV. Actually the Lorentz Force is both scalar and vector: F=qvB = - qv.B + qvxB it makes no sense consider only qvxB and to ignore qv.B.
No. A magnet only interfers with magnetic fields ... lots of old IBMs used magnetic memory cards and that's where the stories started. It might erase a floppy disk, but an electro-magnet does the job much better than a perminant magnet.
Yes.Yes.Yes.Yes.
Magnetic fields do not require a medium to propagate, unlike mechanical waves. The direction of the magnetic field lines represent the direction a north magnetic pole would move if placed in the field. Magnetic fields can only be produced by moving charges or currents, and not by stationary charges. Magnetic fields exert forces on moving charges according to the Lorentz force law.
No, electromagnetic waves require the mutual generation of electric and magnetic fields. This reciprocal relationship allows the waves to propagate through space as self-sustaining oscillations. If only one field could generate the other but not vice versa, electromagnetic waves would not exist.
Magnetism, an aspect of electromagnetism, one of the fundamental forces of nature. Objects such as a bar magnet can influence other magnetic materials, without physically connecting them, because magnetic objects produce a magnetic field. Magnetic fields are usually represented by magnetic flux lines. Magnetic fields influence magnetic materials and also influence charged particles that move through the magnetic field.
Both magnetic and electric charges interact with each other through attraction or repulsion. However, electric charges are typically carried by protons and electrons, while magnetic charges (or poles) are found in magnetic materials like magnets. Additionally, while electric charges produce electric fields that exert forces on other charges, magnetic charges produce magnetic fields that affect moving charges.
One inconsistency in Ampere's law is that it only holds for steady currents, and does not account for time-varying electric fields or changing magnetic fields. This limitation led to the development of Maxwell's equations, which provide a more complete description of electromagnetism.
The force that affects only objects with magnetic domains is the magnetic force. This force arises from the interactions between the magnetic fields of objects with magnetic domains and can attract or repel objects with magnetic properties.
In a conductor - only if the field is moving, thus changing.
A magnet affects only moving charges due to their magnetic field alignment. Stationary charge particles do not produce a magnetic field of their own and do not interact with magnetic fields in the same way.
aluminum is not magnetic. the tree metals that ARE magnetic are : Nickel Iron Cobalt Kinda, only if eddy currents are induced with movement
A pair of wires which carry equal and opposite currents are called balanced transmission lines. When current flows in a single wire in one direction, it creates a magnetic field around the wire and acts like a coil. This is called unbalanced and coaxial cable is an example. With balanced transmissions lines, the current travelling in one direction cancels out the magnetic field produced by the current flowing in the other wire in the opposite direction. Each attempts to create a magnetic field in opposite directions around the transmission line and, since the currents are equal, the magnetic fields are exactly cancelled out and very little or no magnetic field is produced. One big advantage of balanced transmission lines is the lack of what is called, "common mode" noise. Currents in wires not only produce magnetic fields, they are affected by them. Noise produced in one wire is produced equally in the other and the current and voltage difference between them remains the same. Twisting the wires has little extra effect in free space but does help when the transmission lines come close to other wires and other metals. If the two wires were straight and one of them was close to a metal surface, there would be a greater capacitance between the wire closer to the surface changing the velocity factor of one wire and not the other. Twisting the wires balances out capacitive effects in such circumstances.
No, the present physics states that moving charges relatively is the only way to set up a magnetic field.