Electric spoon. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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Electric spoon. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Put two clean and dry bottles on the table. Milk is better: they have wider necks. And you will need to put a ruler on these necks. Hang a fountain pen on a silk thread to the ruler so that its lower end is 1 cm above the table. Place small pieces of paper on the table under the handle.

Rub the wax or plexiglass stick with wool and touch the top end of the handle with it. Look carefully: what will happen to the papers? No, nothing is happening. They lie quietly. Apparently, the experience was not a success? But he fails the second time, and the third.

electric spoon

But if you hang a metal teaspoon in place of the handle, then it’s another matter. The papers will become very disturbed as soon as you touch the spoon with a rubbed stick. Look, look, how they jumped at the bottom end! And you touched the top end of the spoon with your chopstick.

Why such difference? Yes, because the spoon is metal, and metals conduct electricity well. The charge from the stick spread throughout the spoon. A plastic handle does not conduct electricity. So the charge remained at its upper end, it did not hit the lower one. Now you understand why all the wires are made of metal: copper, aluminum, steel? Electric current flows well through metal. And so that he does not go where he should not, the wires are dressed in a sheath made of rubber or plastic. These materials do not conduct electricity.

Author: Galpershtein L.Ya.

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