Unit III -
Electricity and Magnetism
I. Static Electricity - electronic
charges flowing in ______________________.
A) Electricity of the Atom - Electrical Charges come from the ________________
Atoms are
ordinarily _________________ (#protons = ___________________ )
Charge of electron = _______________Coulombs
1.
***
Atoms become charged by gaining or losing ________________.
Mg + 2 F - 1
Why are
protons______________________________ by an atom??
a)
Ion
–
_____________________________________
·
Negatively
charged ion - _________________________
·
Positive
charge ________________________
2.
Charged
objects lose their _________________ when they are_______________
3.
· ______________________________ charged object ____________________
· ____________________ charged object ___________________
B. Detecting Electric Fields.
1.
Electroscope
- used to detect presence of
__________________.
a)
if no charge is present leaves point _________________
b)
leaves _____________________ in presence of charge.
C) Transfer
of charge
Rod - ____________________________________ ______ charge
wool, fur - _______________________________ _______ charge
2. Conduction
- charging object through contact
with a charged body.
Case II – Contact with a
positive charging body