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How would a bar magnet orient itself relative to this planet and magnetic field?
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Is it possible to orient a current loop in a uniform magnetic field such that the loop will not tend to rotate?
Mafee mallom
What is a definition of magnetic field lines?
The magnetic lines of force are not real, they are imaginary lines of force which we draw using a north pole. We can draw as many as we desire using a different starting point for our drawing of lines of force. (Of course, we say that we say that when the strength is more we draw the lines closer and when it is less, we draw them sparse, but it is still subjective, one can start at a different point and draw as many lines .how can we depend on the number of lines for the definition of flux? Is there no better definition? We can straight forward define it as perhaps which is less ambiguous.
What if earth's magnetic field did not occasionally reverse polarity?
We expect Earth would still have a magnetic field during a reversal, but it would be weaker than normal with multiple magnetic poles. Radio communication would deteriorate, navigation by magnetic compass would be difficult and migratory animals might have problems. Many migratory animals use the geomagnetic field to orient themselves. However, even if Earth's magnetic field began a reversal, it would still take several thousand years to complete a reversal.
Why does a fine beam tube show two lines?
you did not orient it perfectly between the two coils
What does not change on passing of a ray of light to another medium?
That event has no effect on any of the following: -- the closing Dow Jones Industrial Average on that day -- the current temperature in the laboratory -- the estimated arrival time of the Orient Express -- the phase of the moon -- the national debt -- the barometric pressure -- Planck's Konstant
Why does iron sand form a pattern when sprinkled over a magnet?
If this happens, it means that the iron contained in the sand will orient itself along the magnetic field lines.
What mineral is known to orient itself toward magnetic north?
magnetite
Why compass is always on north?
The compass relies on earth's magnetic field to orient itself. The magnetic field runs from the north pole to the south pole. The compass will orient itself with whichever pole it's closest to.
How will you find out which one is magnet when two identical bars are given one of them is a magnet and the other is a simple iron bar?
One way is to suspend each bar from a string tied around the middle of the bar. The magnetized bar should rotate to orient itself with the Earth north and south magnetic poles. The other bar will just hang there.
How can you know the earth has a magnetic field?
1) A lodestone (a magnet) held on a string (or, ubiquitously, in a compass) will swivel and orient itself to the earth's magnetic field. Iron particles in cooling magmas will align themselves similarly (aiding in analysis of plate-tectonic palaeogeography). 2) The earth is only capable of sustaining advanced life due to its magnetic field repulsing most of the harmful radiation in the solar wind. I.e., you're alive due to it. 3) Aurora are a visible manifestation of the interaction of solar radiation upon the earth's upper atmosphere as directed by its magnetic field.
What is used to lay out the magnetic grid declination for the map that in turn is used to orient the map sheet with the aid of magnetic compass?
Protractor scale
What is used to lay out the magnetic grid declintion for a map which in turn is used to orient the map sheet with the aid of a magnetic compass?
protractor scale
How were birds thought to orient themselves on a long migratory flight?
There is much experimental evidence that birds can detect Earth's magnetic field and orient themselves with it. Source: I am an A+ student in Science.
Is it possible to orient a current loop in a uniform magnetic field such that the loop will not tend to rotate?
Mafee mallom
How do we know its the south pole of the magnet?
Because magnets are oriented to the poles of the earth. Left to orient themselves the North on a magnet will point to the North Pole if the earth and the South to the South Pole.
Why does the north and south have anything to do with magnets?
Because the Earth has a Magnetic filed - with magnetic poles at roughly the same places as the geographic North and South poles, a freely suspended magnet will tend to orient to point in the direction of those magnetic poles. Also - because the magnetic poles exist - when natural forces cause iron to liquefy, there is tendency for it to align with the magnetic field of the earth - creating the famous "lodestones" that were sometimes used by ancient mariners to create compasses.Note that lodestones are not pure iron, rather they are magnetite - Iron(II,III) oxide)
Why would a compass needle move when placed near a circuit?
Any time current flows through a conductor an electromagnetic field is formed around the length of that conductor. The direction of current flow determines the polarity of this magnetic field.
