Can a current be generated by a magnetic field?
Yes. More specifically, a conductor must be moved in a magnetic field, or the magnetic field must move. (Otherwise, generating a current would violate Conservation of Energy, so without movement, no current is possible.)
A magnetic field is generated whenever a current is passing through a wire.
If a conductor carrying an alternating current is formed into a coil the magnetic field that is generated?
If the current is alternating, the magnetic field will also be alternating.
What happens with the energy associated to the magnetic field of a coil with electric current if the electric current is turned off?
The magnetic field or energy associated with the magnetic field will no longer be generated if the current is turned off.
When a conductor cut the magnetic flux the dynamically induced emf is generated.,
This statement is correct.
Electro-magnetic waves are comprised of an H field (Magnetic-field) and E field (Electric-field) at perpendicular angles to each other. The E field is generated in the axis of the current flow. The H field is generated perpendicular to the axis of the current flow. Which way up the Fields are or alternatively which direction they rotation defines the polarization.
When a electrical current is generated in a conductor by placing it in a magnetic field the process is known as?
Yes. That is how it is done. Answer No, it's a voltage, not a current, that is generated.
What condition will sinusoidal voltage be generated in a coil of wire that rotates in a magnetic field?
a generator or alternator,if the magnetic is permanent the current produced from the coil will be alternating current ac.
Move a conductor through a changing magnetic field and run a light off the current generated.
The compass will align itself with the magnetic field generated by the current flow through the wires.
the electric current is generated by the electric field. thus by the left hand rule when current is passed through a conductor a magnetic field is generated around it so that it is a similar act of a magnet. thus it seems to be a magnet.
A magnetic field is generated around the coil when a current is passed through a coil of wire.
pricinples of electromagnetism state that when current passes through a piece of wire magnetic field is generated around the piece of wire and when a piece of wire passes through the magnetic field current is induced into the piece of wire
When current travels through a conductor a magnetic field is generated around the conductor. If the current is AC the magnetic field will expand and collapse. If you wind the conductor into a coil the magnetic field will be stronger. Place a second coil close to the first, so that the magnetic field will expand and collapse across the second coil; a voltage 180 degrees out of phase with the source voltage will be induced… Read More
earths magnetic field is generated by the circulation of liquid metal.
Among the field lines generated by a circle current, the one which passes the center is not closed. --JF Hu
Electricity is generated when a piece of conductive metal (such as copper) is passed through a magnetic field (or if the magnetic field is moved around the metal). A generator will have a copper wire in the center, surrounded by a magnet shaped like a torus (donut shaped, wire is in the hole in the middle). The wire is stationary. Electricity is generated when the magnet is spun (moving the magnetic field around the wire)… Read More
Perpendicular to both the current and the magnetic field.
How can a change in voltage in a coil of wire be transferred to a neighboring coil of wire without physical contact?
When electric current flows through a coil of wire it generates a magnetic field. Variable current generates variable magnetic field. When a second coil is placed in a variable magnetic field of the first one an electric current is generated in it. Magnetic nature of the connection between two coils can be proved by the fact that it takes place only when the second coil is aligned with the magnetic field of the first one… Read More
They are formed by the Earth's Magnetic Field, the Magnetic Field is generated inside the core of the planet.
the earths core spins through the mantle creating the magnetic field
Yes; any current produces a magnetic field, an AC current will produce an alternating magnetic field. If the current (and therefore the magnetic field) changes quickly, you may not be able to detect it with a compass needle, for example.
When a conductor of electricity moves through a stationary magnetic field, an electric current is induced in the conductor. A hydroelectric generator uses flowing water to spin an axle that is wrapped in conductive wires in a strong magnetic field. Current is generated in the wires, and that current is directed into the electrical grid. The actual process is somewhat more complex but that's the basics. The inverse is also true - when a stationary… Read More
No, however there is a magnetic field generated by the filament in the bulb. Novelty bulbs in the past have utilized this feature by having "dancing" filaments which vibrated back and fourth as the changing magnetic field changed with the alternating current supplied to the filament in the presence of a stable a magnetic field provided by a permanent magnet in the base.
the outer core.
If the magnetic field is caused only by a current, you can turn the current off.If you have another magnetic field, for example due to a permanent magnet, with a current you can create a magnetic field that counters the first one. But that will only work in certain regions in space; you can't cancel such a magnetic field everywhere in space.
The deflection of a magnetic compass in the presence of an electric current, is evidence that an electric current produces a magnetic field.
What the characteristics of the magnetic field produce by flowing current?
yes.magnetic field present around the conductor. current and magnetic fields are inter related.. with current we can produce magnetic field and vice versa
magnetic field is the field produced due to flow of charges in conductor carrying current.
The earth's magnetic field is produced by the molten iron core at its center
In a very predictable way. It follows Ohms law. Electrons do not flow instead they transfer their charge down a conductor to where they do work. Usually heating or lighting. They can excite a magnetic field and make a motor go. As a magnetic field is crossed by a conductor a current is generated.
What happens to the direction of the magnetic field about an electric current when the direction of the current is reversed?
The magnetic field would reverse.
If the current in the wire increases, the magnetic field also increases.
An electric current produces a magnetic field. True.
magnetic field and temperature When current flows through a conductor, it generates a magnetic field. The variation of this magnetic field later produces an electric field.
No, a voltage will be generated, not a current. Current will only flow if the induced voltage is connected to a load.
Anytime a particle experiences a change in charge or anytime charged particle travels, a magnetic field a generated.
the magnetic field affecting the wire changes as the magnet moves.
What law states that the induced current is always in such a direction as to oppose the change in the magnetic field that generated it?
It is called Lenz's law. Refer to the below related link for its Wikipedia article. It is a direct result of Faraday's law. If you look at the equation.. ε = - dΦ/dt it is basically the negative sign that says the magnetic field of the induced current will be in the oppose direction of the change in the magnetic field. Do the following things. • Curl the fingers of your right hand. • Let… Read More
You use a magnetic field to induce a current in a wire by moving them in relation to each other, or by varying the strength of the magnetic field.
Which happens to the magnetic field of a wire when you change the direction of the current in the wire The magnetic field?
The magnetic field collapses to zero, then builds up again for the current in the opposite direction.
An electric current produces a magnetic field.
What statements describes the result of reversing the current in a current-carrying in a magnetic field?
When the current is reverted, the magnetic field will also be reverted.
they produce a current the magnetic field has to turn motion into that current. the gas coal or water pass on that current to the magnetic field.
Depends whether Direct Current or Alternating Current. Only Alternating Current produces magnetic field.
Electric currents and magnetic fields are by nature and by definition related to each other. In general, a magnetic field is created by the rotation of charge. If you imagine an electron following a circular path, a magnetic field would be created in the direction perpendicular to the plane of the circle. On the other hand, electric current is defined as the flow of charge. So, an electron flowing along a wire results in current… Read More
-- A current flowing through a conductor creates a magnetic field around the conductor. -- Moving a conductor through a constant magnetic field creates a current in the conductor. -- If there's a conductor sitting motionless in a magnetic field, a current flows in the conductor whenever the strength or direction of the magnetic field changes.