ChargingbyInductionGrade9.notebook
1
October20,2013
ChargingbyInduction
TextbookSection11.6
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Charging by Induction: Grade 9 Notebook, Exercises of Electromagnetic Engineering
A notebook from a Grade 9 science class on the topic of charging by induction. It includes explanations, recap questions, and activities related to the concept of charging by induction, such as electroscopes and electrostatic speakers.
Typology: Exercises
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Charging
by
Induction
Textbook
Section
Recap from Yesterday...
1. Charging by friction involves two objects that are
originally...
a. both charged
b. one charged, one neutral
c. both neutral
d. both a and b can apply
2. Charging by conduction involves two objects that are
originally...
a. both charged
b. one charged, one neutral
c. both neutral
d. both a and b can apply
If an object is positively charged it will induce
electrons in the neutral object to move towards it
If an object is negatively charged it will induce
electrons in the neutral object to move away from it
After the electrons shift position, the neutral object will be
attracted to the charged object
the neutral object doesn't gain or loose electrons
Charging Objects Permanently by
Induction
We can do this by grounding the object that's being
charged
Example: Pith Ball! Fancy Smartboard drawing time!
Applications
Electrostatic lifting apparatus
Electrostatic speakers
Activity Time
Metal leaf electroscope
Before
During
After
Electroscope Lab
Charge Separation
Charged Rod
Gold Leaves
Knob
Electroscope Lab
Charging by Induction
Charged Rod
Gold Leaves
Knob
Ground Wire
Before
During
After
Electroscope Lab
Charging by Induction Permanently
Charged Rod
Gold Leaves
Knob
Ground Wire
Before
During
After
Ticket Out of Class
- If you want to charge permanently by induction
what can you do?
a. ground the charged object
b. make the charged object touch the neutral object
c. ground the neutral object
d. take the charged object away
- Do you like Bill Nye the Science Guy?