Electric Charge Flashcards
All 6 cards in this deck
Which type of materials become electrically charged when they are rubbed against each other?
Certain insulating materials.
Which particles are transferred when two insulating materials are rubbed together?
Electrons, which are negatively charged.
What charge is left on a material that gains electrons when rubbed?
A negative charge.
True or false? Rubbing a cloth on a rod transfers positive charge from the cloth to the rod.
False. Only electrons (negative charge) are transferred; positive charges do not move.
True or false? A cloth that loses electrons is left with an equal positive charge.
True. The charge lost by one material equals the charge gained by the other.
What are the steps to explain why a material becomes positively charged by rubbing?
e.g. a cloth rubbed on a polythene rod becomes positively charged
- Electrons are transferred from the cloth to the rod.
- Electrons are negatively charged.
- So the cloth has more positive charges than negative charges — it is positively charged.