A plastic rod and a dry cloth are uncharged.
The rod is now rubbed with the cloth and they both become charged. The rod becomes negatively charged because some charged particles move from the cloth to the rod.
What is the charge on the cloth and which particles moved in the charging process?
1 )
charge on cloth:negative / particles that moved:electrons
2 )
charge on cloth:negative / particles that moved:neutrons
charge on cloth:positive / particles that moved:electrons
4 )
charge on cloth:positive / particles that moved:neutrons
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