Test Magnetic Properties of Iron Bars

[greener1993]

You have two identical bars of iron – except that one is a magnet. Without using any piece of apparatus, or any other object, how can you find out which is which?

still exremly confused haven't seen a forum which can give me an answer on the many forums i have posted on

 

[Doc Al]

What's the point of just giving you the answer? Have you given it any thought?

You already have a thread open on this topic. Post your ideas there.

 

[tomcue]

As a scientist, there are several ways you can test the magnetic properties of iron bars without using any apparatus or other objects. Here are a few suggestions:

1. Observe the behavior of the bars near other magnetic objects. Place the bars near a compass or another magnet. The bar that is a magnet will attract or repel the other object, while the non-magnetic bar will not have any effect.

2. Use iron filings. Place the bars on a flat surface and sprinkle iron filings around them. The magnetic bar will attract the filings, forming a pattern around it, while the non-magnetic bar will not have any effect.

3. Test for magnetic polarity. If you have a small piece of paper and a pencil, you can rub the pencil lead onto the paper and create a magnet. Place the paper near the bars and observe how it interacts with each bar. The magnetic bar will attract one end of the paper, while the non-magnetic bar will not.

4. Test for magnetic fields. If you have a small piece of paper and some water, you can create a simple compass. Place the paper on top of the water and float it near the bars. The paper will align with the magnetic field of the magnet, indicating which bar is magnetic.

Remember, these methods may not be as accurate as using scientific apparatus, but they can still provide a good indication of which bar is magnetic and which is not. It is always best to use proper equipment and methods to obtain accurate and reliable results.