Question

How to throw negatively and catch the positively ​

Answer 1

Electrifying an object by induction means assigning it an electric charge using another electrified body without contact between them. This electrification process is based on the concept of attraction and repulsion of electrical charges. See in the diagram below how to induce a body:

Initially, there is the neutral sphere A and the sphere B with a positive charge. The electrified body (sphere B) is called an inductor, and the neutral body (sphere A) is called an inductor. (Image)

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