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When there is a change in the magnetic field in a closed loop of wire?
Wiki User
∙ 13y ago
This can be done by moving a magnet through a coil of wire.
This is called electromagnetic induction and it results in a voltage being induced in the coil. The charges in the coil are set in motion...
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoThis induces a current in the loop.
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How is electricity produced from magnetism?
Electricity are produced from magnetism from induction. Induction is a magnetic field.
Where is the strongest area of magnetism in the field?
according to the ampere's law . magnetic field is strongest in a loop or a plane. and about toroid the magnetic is strongest in the coil where the wire is rotated around it . Magnetic field is minimum inside and outside the toroid.
What is the reason for the presence of residual magnetism in the field poles?
I'm not quite sure what you're asking, but the reason that there is magnetism at the poles has to do with the fact that magnetic field vector lines have no beginning or end, which is described mathematically through Maxwell's equations; specifically through Gauss' law for magnetism which states that the divergence of a magnetic field is 0, or ∇ ● B = 0. Divergence is a term meaning how much of something is exiting an enclosed surface. Since the divergence of a magnetic field is zero, there must be, always, the exact same amount of magnetic field exiting a surface as entering it, leaving the net divergence as 0.Thus, a magnetic field vector line has to "exit" from somewhere and loop around to "enter" somewhere else, and these two "somewheres" have to be connected (like a circuit). We call these two "somewheres" the magnetic poles.
What does hysteresis mean in magnetism?
A hysteresis curve is a plot, graph or some kind of pictorial representation of the relationship between the magnetic field strength (H) and the magnetic flux density (B) of a material under inspection.
What does magnetic field lines denotes?
a line to represent the direction of a region around a magnetic material or a moving electric charge within which the force of magnetism acts.A2. Perhaps better describes as lines of magnetic force. These are lines of equal intensity between the North and South pole of a magnet. They are similarly charged, hence they repel each other. They extend arbitrarily far into space if allowed to, and will eventually form a sphere.These lines of magnetic force are that along which your compass aligns itself at your locale.
What happens when there is a change in the magnetic field in a closed loop of wire?
It produces a current.
If your car moves over a wide closed loop of wire embedded in a road urface is the magnetic field on the earth within the loop?
yes the perpendicular component of earths magnetic field passes through the loop even if the car is moving above it or not , but no current is induced in the loop since it is not moving
What is produced when a magnetic field moves relative to a closed wire loop?
Faraday says you will induce a current in the wire.
Is magnetic field lines continuous?
Magnetic field lines are continuous. The lines outside the magnet go from north to south, while inside goes from south to north creating a closed loop. This is because there are no magnetic monopoles.
How is Magnetic flux in a rectangular loop directly related to Magnetic force?
Magnetic flux through a loop is just a measurement of the strength of the magnetic field passing through the loop, and since magnetic field strength is directly related to magnetic force, magnetic force is directly related to the magnetic flux passing through the loop.
For a loop of current carrying wire in a uniform magnetic field the potential energy is a minimum if the magnetic dipole moment of the loop is?
in the same direction as the field
What describes the production of an electric current by moving a loop of wire through a magnetic field or moving a magnet through a wire loop?
moving a loop of wire through a magnetic Field. The rotation of a coil of copper wire trough a magnetic field changes magnetic field as "seen" from the coil inducing an alternating current.
If a car made of iron and steel moves over a wide closed loop of wire in the road will the magnetic field of the earth be altered?
who the hell cares.
Why if the same current flows in a wire coil and a single wire loop the magnetic field inside the coil is stronger than the field inside the loop?
why, if the same current flows in a wire coil and a single loop, the magnetic field inside the coil stronger than the field inside the loop
When you loop the wire with a current it will?
increase the strenght of the magnetic field. :)
What is the magnetic flux through the loop of a square wire loop 4Cm on a side which is perpendicular to the magnetic field 0.025Tesla?
Assuming a constant magnetic field, the flux is B*A*cos θ.In this case, the flux is 0.00004 webers.
How to make magnetic power?
A note about terminology - magnetic energy is the energy stored in a magnetic field. I have never heard of magnetic power. However, I assume you are asking how to get electrical power from magnetic phenomena. The way this works is directly from maxwell's equations. Faraday's law says that the rate of change of flux through a loop (field through loop times area of loop) is proportional to the electric field around that loop, which is proportional to the current, if the loop is a conductor. The generator works by spinning a permanent magnet near a loop of wire. As the magnet spins, it induces current in the loop of wire, which can then be made to do useful work. A note about energy conservation: when the current in the loop is induced, it is always in such a way as to attract the spinning magnet, so the external agent has to do work to resist this.
