A particular solid is electrically charged after it is rubbed, but it is not known whether...
A particular solid is electrically charged after it is rubbed, but it is not known whether its charge is positive or negative. How could you determine which charge it has by using a piece of plastic and fur?
Homework Answers
It was conventional that when a plastic rod is rubbed with fur, The fur transfer negative charges to the plastic rod. So the plastic rod becomes negatively charged.
Now bring the charged plastic rod near to the particular solid which is electrically charged,
If the plastic rod repels the particular solid, it means the solid is negatively charged.
But if the plastic rod attracts s the particular solid, it means the solid is positively charged.
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