Question

You start by rubbing a glass rod with a piece of silk and then suspend the electrically charged glass rod from an insulated wire.
You then rub a vinyl ruler with a piece of wool.
Last, you bring the electrically charged vinyl ruler close to the suspended glass rod.
a) State the charge on the glass rod. (½)
b) State the charge on the vinyl ruler. (½)
c) Will the glass rod and the vinyl ruler attract or repel? Justify your answer. (1)

Answer 1

Answer:

a) positive, b) positive c) They will repel as same poles repel