Hello and welcome to our channel!
today we are going to do the experiment of the caged piece of paper
we will need a metal cage, a piece of paper and a balloon
first, we will load the balloon electrically
As we can see, there is an interaction between the charged globe of electricity and the piece of paper (neutral)
as a consequence, the load is distributed on the surface of the piece of paper
the charge of different sign will cause both bodies to interact
then we will place the piece of paper inside the cage
finally, we will observe that this time the piece of paper and the balloon do not interact. This happens because the piece of paper is inside the metal cage, where the field is zero.
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