Now, touch the first object with the magnet to see if your prediction is correct. Continue making predictions and testing each object. The paper clips, jar lid, and nail are probably magnetic. The ...

They test three different magnets and measure the distance that each magnet is able to attract a paper clip. To make the test fair, they use the same ruler and paper clip throughout. This short ...

As the number of turns increases the number of paper clips held increase. This means that the strength of the magnet increases with increasing number of turns in the coil. Once again, since the ...