Question

The aluminium strips in an electroscope, as shown in figure,
are replaced by plastic strips and a charged body is brought in
contact with the metal clip. What will happen?​

Answer 1

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If aluminum (metal) strips in an electroscope are replaced by plastic strips, the strips won't spread out. As a result, we cannot test whether the object is carrying a charge or not.

Note: Electric charge can be transferred from a charged object to another only through a metal conductor.