Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    2
    ReputationRep:
    A balloon is rubbed on a wollen jumper and then stuck to a classroom wall. Explain how it sticks to the wall

    The balloon is charged by the rubbing motion. This charge causes the induction of an opposite charge in the wall. As opposite charges attract the balloon sticks to the wall due to the electrostatic force.

    Is that right?
    Offline

    10
    (Original post by turn and fall)
    A balloon is rubbed on a wollen jumper and then stuck to a classroom wall. Explain how it sticks to the wall

    The balloon is charged by the rubbing motion. This charge causes the induction of an opposite charge in the wall. As opposite charges attract the balloon sticks to the wall due to the electrostatic force.

    Is that right?
    That's all correct.
    Charge is transferred from the jumper to the balloon. (The jumper will have an equal and opposite charge to the balloon.)
    You just need to add that the balloon is an insulator. It's this fact that stops the charges conducting away, and makes them stay where they are on its surface.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: April 12, 2011
Poll
Do you like carrot cake?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.