Homemade Electromagnet
While Performing this fun activity following materials are used namely a nail or a bolt about 7 cm long, few meter insulated copper wire and a battery.
You can't even imagine how easy it is to make a magnet at home. Takeany iron piece a nail or bolt and coil insulated copper wire around it from one end to the other. Repeat this process a few times keeping the direction of turns same. Now scrap off the insulation up to about 7cm from both the ends. Join these two ends to the battery terminals. Now if small iron pieces or clips are brought near it, they would immediately get attracted revealing its magnetic properties.
However. the moment its contact from the battery is broken, it loses its magnetic property. So, it's only a temporary magnet. Such type of magnets are used in call-bells, motor starters etc.
No comments:
Post a Comment