Physics 201- Introduction to Electricity & Magnetism
|August 28- Electric Charge|
|How does one transfer
charge from one object to another?
What does it mean to "ground" an object?
To "ground" and object means that we connect it to
a large source of charges with a conductor (or directly touch the two).
The source will then supply whatever chrage is necessary to neutralize
the object. Physically, this means that either there are many free
electrons in the source that can move to the previously positively charge
object. Or, the source can accept the ecess electrons from the previously
negatively charged object.
22-1Q a) A positively charged rod attracts
a small piece of cork. Can we conclude that the cork is negatively
22-1Q b) The rod repels another small piece
of cork. Can we conclude that this piece is positively charged?
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