Question

IF WE RUB A RULLER AND TAKE CLOSE TO THE BITS OF PAPER THEY ARE ATTRACTED AND THEN THEY STICK TO RULLER AND THEN FLY AWAY , WHY DO THEY FLY AWAY ? AS PLASTIC IS AN INSULATOR THE ELECTRONS WILL NOT FLOW FTOM RULLER TO PAPER NITHER EATHING IS A REASON HERE SO WHERE DOES THE ELECTRON GO PLEASE GIVE A DEEP EXPLANATION
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Answer 1

Explanation: The plastic ruler picks up free electrons when rubbed on hair, so it becomes negatively charged. The paper bits, neutrally charged, are more positive than the ruler, and opposite charges attract.

Both the ruler and the paper are insulators, so very little current flows from the ruler to the paper to re-balance the charges, therefore the paper bits continue to be attracted to the ruler.