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What is the relationship between current flow and magnetic poles?
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoThe relationship is vector relationship is dB/dt = -zJ;
the scalar relationship is db/dt = zj.
These are Stationary Conditions for the Electromagnetic Fields.
0 = [d/dr, Del][b,b]=
[db/dr - Del .B, dB/dr + Del b] =
[db/dt -Del .E, dB/dt + Del e]
where dr= cdt and cb=e and e=zh and Del e = zDel h= z J
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What happens to the magnetic force as the distance between two magnetic poles decreases?
It remains constant
What happens when wire is placed within a magnetic field?
Electric current is produced.Nothing until it is moved at right angles{90 degrees) to the magnetic field between it's poles. The faster it moves the larger the voltage measured between the ends of the wire.
What happens when a wire placed within a magnetic field?
Electric current is produced.Nothing until it is moved at right angles{90 degrees) to the magnetic field between it's poles. The faster it moves the larger the voltage measured between the ends of the wire.
Which force acts between a north and south pole?
Assuming that these are magnetic poles, it is the force of magnetic attraction.
The force field created between the poles of a magnet?
magnetic field
What happens if a direct current is put through a coil suspended between the poles of a magnet?
The coil will align itself with the magnetic field (poles) of the magnet.
What is the relationship between the geographic and geomagnetic poles?
The magnetic Pole shifts continuously but the geographic Pole is a mathematically positioned permanent site.
What is the term for the attraction or repulsion between the poles of magnetic?
magnetic force
Where is the magnetic compass most beneficial?
About Midway between the earth's magnetic poles.
Does the earth spin on its true poles or magnetic poles?
Magnetic poles
What is the relationship between the poles on the magnet?
like poles attract unlike poles repel
What happens to the magnetic forces as the distance between two magnetic poles decreases?
It remains constant
What happens to the magnetic force as the distance between two magnetic poles decreases?
It remains constant
Why there is N'S pole for a magnet why not W'E?
A magnetic needle has two poles, north and south. They point to the magnetic poles of the earth due to the attraction between positive and negative poles. There are no magnetic poles to the east or west, therefore a needle aligns itself north-south.
Why transformers do not have poles even though it has magnetic field?
The windings of a transformer do have poles, which alternate in polarity in step with the A.C. magnetising current. As the polarity of the poles reverse, so too does the direction of the magnetic flux within the transformer's core.
What is magnetic variation?
Since the Earth's magnetic poles are not located at the geographic poles, a magnetic compass doesn't point to 'true' (geographic) north. The DIFFERENCE angle between magnetic north and true north is the magnetic variation or declination where you are. It changes for different locations.
What are the principles of magnetism?
When a magnet is freely suspended it will come to rest aligned with the north and south magnetic poles of the Earth. The north seeking point of the magnet is called the south pole and the south seeking point of the magnet is called the north pole. If the two magnetic poles are placed near each other a force will exist between them, this force will be either of attraction or repulsion. Like poles repel, unlike poles attract. A moving magnetic field will induce a current in a wire. Conversely, a moving wire in a magnetic field will have a current induced in it. Also, a wire carrying current will create a magnetic field. Electricity and magnetism are so closely related to each other that it is actually called electromagnetism.
