1. Imagine a magnet attached to a table so that it was free to rotate, but not t
ID: 1533538 • Letter: 1
Question
1. Imagine a magnet attached to a table so that it was free to rotate, but not to move. How would this magnet orient itself if another magnet was brought near?
2. How does a compass work and how would you build one? What materials do you need?
Sketch and consider the following situations: a loop of wire is suspended above the south pole of a bar magnet.
1. The loop is stationary above the south pole of the magnet.
2. The loop is slowly lowered so that the south pole of the magnet penetrates the loop.
Take a picture or scan your drawings and upload them to this canvas board.
For each of the above situations, what is the direction of the magnetic field within the loop? Does the current flow in the loop? If so, does it flow clockwise or counterclockwise when viewed from above?
Explanation / Answer
1) If another magnet was brought near than South Pole gets oriented towards the North Pole of second magnet and North Pole gets oriented towards the South Pole .
2) If we hold two bar magnets so their north poles are almost touching, they'll push away from one another; if we turn one of the magnets around so one magnet's north pole is near the other magnet's south pole, the magnets will pull toward one another. A compass is designed to react to the magnetic field .
Float the compass. Fill a bowl or jar with a few inches of water and place the compass on the water. The magnetized needle will align itself with the earth's magnetic field to point north to south.
A compass needle can be made from any piece of metal that can be magnetized. A sewing needle , A paperclip , A razor blade .
Thus, the direction of the magnetic field within the loop = into the plane of paper .
Yes, the current flow in the loop in counterclockwise direction .
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