Question

how can we test if an object is charged or not .​

Answer 1

By rubbing it

Like example....if u have a comb and u rub the comb against your hair then u can see that if u bring that rubbed comb near strips of paper...the strips of paper will get attracted towards the comb...and that way we can identify that the object is charged or not


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Answer 2

Answer:

in order to tell the sign of an object ,you need another object with a known positive or negative charge. if you rube a piece of glass with silk ,it will have a positive charge (by convention ),if you rube a piece of amber with fur, it will have a negative charge (by convention) use whatever you have handy

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