Experience magnet. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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Experience magnet. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

For experiments, we need a permanent magnet. He may be at your home. This is a magnetic soap dish or an old, unnecessary loudspeaker from a radio receiver. If you don’t have any of this and you can’t get it from your comrades, you will have to make a magnet yourself. To do this, you need a thin - about 0,3 mm in diameter - wire and a flashlight battery (flat).

Wind a copper insulated wire 0,3 mm thick on a spool of thread. When winding the initial end, leave a length of about 20 centimeters. Try to make the winding evenly. When the coil is wound, insert a rod (preferably steel) into its hole as a core. The size of the core should be such that its ends protrude slightly from the coil. If a suitable steel rod is not available, insert a bunch of well-expanded paper clips.

Experiment magnet

Attach the ends of the coiled wire to a flashlight battery. An electric current passing through the winding will magnetize the core, and if it is steel, it will remain magnetized even after the battery is disconnected. You can make sure that the core is magnetized by bringing buttons or paper clips to it.

Remove the core from the coil, insert a few needles in its place and attach the battery. The needles will become magnetized and we will need them for the following experiments. Insert the needles, picking them up with their ears in one direction, with their points in the other.

When you take out the needles, disconnect the battery and replace the core. Remember which ends of the wires from the coil were connected to which poles of the battery.

Author: Rabiza F.V.

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