Q.No.162: - An electrified rod attracts
pieces of paper. After a while these pieces fly away! Why?
Ans: - Electrified rod has more number of electrons when we took
this rod near to the piece of paper which is neutral the charge from rod shifts
to the paper after the transfer of charge the paper get charged and now both
have equal number on electrons. Now these electrons exert a repulsive force on
each other. That’s why after a while paper pieces fly away.
2 comments:
Paper pieces are charged by electrostatic induction due to presence of positively charged rod.
When in contact electrons transfer occurs from paper pieces to rod leaving the pieces with net positive charge.Which then repel each other.
Pieces of paper are insulators. They cant transfer electrons.
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