Electromagnet Trials

The first using a single a 1.5V "C" battery to a metal ring:



This electromagnet did not work completely, because even though the metal ring became magnetized, the metal ring became so magnetized, that after disconnecting the current, the paperclips were attracted to the metal ring:




Trial two:

In order to make the electromagnet successful, an iron rod was used, instead of the ring, which is harder to magnetize.



Trial two was successful, here the current is connected and the paperclips are attracted to the rod:



because the rod was harder to magnetize, the paperclips came off when it was turned off.



This video shows the electromagnet picking up paperclips when it's on and not attracting anything when it is disconnected from the battery.