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If it is a small magnet, like one that you can hold in your hand, place the magnet on a flat surface, put a white sheet of paper over it, take iron shavings or shavings from a magnetic metal, and sprinkle them on the paper. Gently shake the paper if you have to. You should start to see lines from where the magnetic fields attracted the metal.
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∙ 13y ago
gilbert dunleavy
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∙ 13y agoWe can draw a magnetic field by placing a compass around the magnet at various locations and drawing points with the help of a pencil on the paper at which this apparatus is placed. After drawing points we can join them and this gives the magnetic lines of force, which constitute the magnetic field.
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∙ 11y agosearch magnetic field lines and go on images...
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∙ 11y agothis will be in the 10th standard book
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What is used to represent magnetic field lines on a diagram?
Curved lines are used to represent magnetic field lines. The closer together they are, the stronger the magnetic field. Arrows are added to show the direction a north pole would move if placed at that point.
What are the magnetic field lines around the earth known as?
Lines of magnetic force are a human device for imagining them. There are no lines as such. The lines we draw are contour lines, analogous to lines of equal force. As to your question, the Magnetosphere is possibly that which you seek.
What is the electric field surrounding an electron It's defined as a force vector or warpage of space around the electron - what is this mysterious field made of what is it in a tangible sense?
The electron is surrounded by an electric field. The electric field can be represented by force vectors in models because the field will act on other fields. It will in concert with another field like it to push away, or act with another field opposite it to draw together. It's fairly simple like that. The "problem" with an electric or magnetic field is that is it invisible. Its effects can be seen, but the field itself, the force itself, is invisible. Like gravity. You can't "grab a handful" of gravity and look at it. And you can't do that with electric or magnetic fields, either. It's just there and it works. It works in accordance with the laws of electromagnetics.
What is a surveyer?
Surveyer :A Surveyer is a man who done work in field. Before construct the Society, Bridge, Roads, a suveyer must first reconsis the area and collect the data in area and draw in our field book.
Can you show a diagram of the layers of soil from the oldest to the youngest?
No, WikiAnswers can not include diagrams. However if you draw 5 horizontal lines one below the other and in the gap between the bottom two lines write "oldest" and in the gap between the top to lines write "youngest". Then above the top line write "The Surface / Grass", you will have made the diagram you need.
What is used to represent magnetic field lines on a diagram?
Curved lines are used to represent magnetic field lines. The closer together they are, the stronger the magnetic field. Arrows are added to show the direction a north pole would move if placed at that point.
What are the magnetic field lines around the earth known as?
Lines of magnetic force are a human device for imagining them. There are no lines as such. The lines we draw are contour lines, analogous to lines of equal force. As to your question, the Magnetosphere is possibly that which you seek.
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.
How are magnetic field lines described?
Magnetic Field Lines Show Magnitude and Direction:When the lines of the magnetic field are close together the magnetic field is strong. In a region where the line density is high, one says that it has great intensity or strength. Technically, the density of lines is proportional to the magnitude of the field.The direction that magnetic field lines are oriented provides the information on the direction of the field, with the convention that the lines have arrows drawn so the lines exit from the North pole of a permanent magnet, or equivalently, the arrows point in the direction that the North end of a compass needle would point if placed on the line.More Information:Magnetic field lines do not really exist any more than electric field lines exist, but both are extremely valuable representations of the strength and direction of magnet (or electric) fields. (Pictures of field lines are human creations to help understand fields, but the pictures of field lines that are correctly drawn do provide a faithful representation of the mathematical description of the field.)When one says a magnetic field is "strong" one does not mean that it exerts a great force on another magnetic object. Strength of a magnetic field is defined in terms of torque, not force. Here is how.Magnetic Vector Field Definition:If a magnetic field exists at a certain point, then one characterizes it with a strength and direction. Indeed, one can do this at all points and know the magnitude and direction of the field at all points. Because vectors have magnitude and direction, we can associate a vector with the magnetic field at any point and that is why one says that a magnetic field is a vector field.Magnetic Field Direction:We define strength or magnitude of the field using the classic behavior that we see when we use a compass. The field exerts a torque on the compass needle to orient it. One end of the compass is marked "North" because, in the absence of any other field, the compass needle points to the "North" geographic pole of the Earth. Using this definition, when a compass is brought near a permanent magnet, the North end of the compass is said to point towards the South end of the magnet. (North poles attract South poles.) This pointing direction can be mapped out in the whole space around the bar magnet, orienting the compass not just flat or horizontal, but in all directions so as to determine which way the magnetic field points for all positions in the space around the permanent magnet. (This works equally well for electromagnets, but we describe it for the most simple situation.)Magnetic Field Strength:The field direction of at each point, as described above, is the direction the North end of the compass needle points when there is zero torque on the needle. If one turns the needle so it is perpendicular to the field direction, then the needle experiences maximum torque. That torque measures the strength or magnitude of the field. Thus, once you set the strength scale by assigning one value of the field strength for one particular compass, you can map out the field strength at all points with the same compass and you get the magnitude and direction of the magnetic field everywhere.Magnetic Field Lines:The above process produces a vector field meaning that at every point in space one could draw an small arrow with a magnitude and direction indicating the field. Such a drawing produces a picture a bunch of arrows in the space around the magnet representing the magnetic field. That is a perfectly good representation of a vector field.One can also create a line representation of a vector field, magnetic, electric or other. For the magnet above, if you start at a point on the North end of the magnet and draw a line in the direction of the arrow, you immediately encounter another arrow. At the point of the new arrow you continue drawing the line in the direction of that arrow, until you get to the next arrow which gives the next direction and on and on. Basically, if you start at the North end of the magnet and draw a line in a direction that follows the directions of the arrows, that line ends up at the south end of the magnet. One can the pick a new starting position on the surface of the magnet and repeat the process. Doing this over and over produces a whole set of lines which eventually fills the entire space around the magnet.The set of lines drawn are not the magnetic field lines. But, each of the lines drawn does follow a magnetic field line. That sounds odd, but to fairly represent the strength of the field, one has to have one more condition applied that determines how many lines are drawn. That condition is that the number of lines in any region of space is proportional to the strength of the field in that region. That requires some additional rule because the number or density of lines won't communicate the field strength if one just draws lines wherever one likes.Density of Magnetic Field Lines:When using field lines to represent a vector field (electric or magnetic or whatever) one needs the information of both magnitude and direction and the individual lines only give direction. So, convention is that the number of lines that you draw in any particular region of space is proportional to the strength (magnitude) of the field in that region. That is hard to do. Fortunately, magnetic field lines have a special property that makes this easier.Magnetic field lines never begin or end.The lines in a picture of a bar magnet makes it look like lines exit the North end and enter the South end and they do, but they keep going through the interior and come out the opposite end forming closed loops. Usually the part of the loops inside the magnet are not drawn, but they exist. It is clearer for electromagnets where the inside is visible in the drawing.Drawing Lines:The technical aspects of drawing the lines is too tricky to explain in detail, but here is a simple and correct approach.First, decide how many lines are to be drawn. More is better, but let us suppose 100 for now. That means that all 100 must come out from the parts of the magnet deemed to be North and into the parts identified as South. That includes the ends and the sides and all regions of the surface where lines may go in or out. Draw more lines in the region where strength of the field at the surface is high and fewer out of regions where the strength is low. You have arranged the lines with the right density when putting your imaginary compass into a region with some density of lines will produce a maximum torque corresponding to the field strength. This all sounds a lot easier than it is.They form complete loops.
How do you draw field lines for a positive charge and a negative charge?
You don't
Why do two magnetic lines never intersect each other?
It is important to realize that magnetic lines do not really exist! They are a tool to visualize the magnetic field, but the field is continuous and does not exist solely inside lines. The direction of the lines gives the direction of the magnetic field, the density of lines, its strength. This also explains why no two field lines can ever intersect; a field line carries information about the direction of the magnetic field, if they would intersect an ambiguity would arise about the direction (not to mention a field of apparent infinite strength since the density would be infinite at the point of crossing). The field lines are almost never used in explicit calculations; instead one uses a vector, an entity which contains information about the magnitude and direction of a field in every point in space and time. Adding two magnetic fields is then easy; just add the vectors of both fields in every point in space (and time). You can use the resulting vector field to draw field lines again if you want. An easy way to imagine what would happen to field lines when they might intersect is to look at them as being such vectors. Imagine you have one field line pointing to the right, and another one pointing up. The result of adding would be a field line pointing somewhere in the up-right direction (the exact direction depending on the relative magnitudes of the fields). If the fields are equal in magnitude but opposite in direction they would cancel; the field line disappears. But this is to be expected! The magnetic fields canceled each other in that point! One has to take care with this analogy however; as for field lines the measure of magnitude is their density; which is an undefined thing if you are considering just one field line per field. For a vector however, the measure of magnitude is its length. Therefore adding two field lines of the same magnitude and pointing in the same direction would result in a vector of twice the length, but in field line language you would have to double the density at that point. This is one of the reasons field lines are used for visualization but not calculation. By the way, all these things apply to other fields as well. Electric fields can also be represented by field lines, and they as well cannot intersect (for the same reasons). Electric field lines, however, are not necessarily closed loops like magnetic field lines (this has to do with the non-existence of magnetic monopoles).
Can electric field lines do work?
Yes. Work is force times distance, or technically the dot product of vector force times vector distance. Electric fields exert force on charge and the force does work when the charge moves in the direction of the electric force. (In the converse, when the movement of charge is against the direction of force, work is transformed into stored electromagnetic energy.) Technically, it is the electric field that does work and not the field line. Mother nature produces electric fields, but humans can not see electric fields. Humans invented the idea of field lines to create a mental picture of the field. The two most common ways are to draw lines in space or to draw a collection of arrows in space. Note: One should not confuse this answer with the question of whether work can be done by a magnetic field. A magnetic field can not do work because the direction of the magnetic force is always perpendicular to the direction of motion of charge and hence the dot product of force and distance moved is always zero.
How many atoms does it take before you can see them with the naked eye?
Until there is enough atoms together that there magnetic charge draw subparticles into there magnetic field as what we call matter,gas,liquirds or solids.
Does a magnet attract iron?
Yes, a magnet will attract iron. This is because iron is a type of magnetic substance, and the magnet can penetrate it to increase the magnetic field and draw it near it.
What do you draw straight lines with?
you draw straight lines with a ruler
What happens to the direction of the magnet field about a straight section of wire when the direction of the current is reversed?
In that case, the magnetic field caused by the current would also be reversed. As for the wire itself, it would feel a force in the opposite direction, due to the interaction of the magnetic fields.
How do you make a rectangle with 3 lines?
Draw a rectangle and draw three lines in it.... Firstly, draw 3 lines and divide one line into two...then it will easy to draw a rectangle...
