CTET 2 Math and Science 13 Jan 2023 Paper

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Question : 63 of 150

Marks: +1, -0

Which of the following properties does an electroscope make use of to test whether an object is carrying charge or not?

Like charges repel each other
Flow of charges constitutes an electric current
A glass rod acquires a positive charge on being rubbed with a piece of silk
There are two kinds of charges - positive charge and negative charge

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