Question

how does an object become electrically charged

Answer 1

When insulating materials rub against each other, they may become electrically charged . Electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. The material that gains electrons becomes negatively charged. The material that loses electrons is left with a positive charge.

Answer 2

How objects become electrically charged  

All electrical charges attract or repel one another: charges repel, while opposite charges attract.

The force between charged objects is directly proportional to the amount of electrical charge on each object.

The force between charged objects is directly proportional to the square of the distance between the two objects.

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