Examples of Electrostatics in the world
are:
A doorknob shock
Static in the dryer
Your hair standing up when combed
Electricity at rest
Involves electrical charges, the forces between
them, and their behavior in materials
Mutual attractions or repulsions between
electrons or protons is called charge.
Charges can be negative (-) or positive (+)
Protons= positively charged
Neutrons= no charge, not repelled or attracted
to other particles
Electrons= negatively charged
Draw a picture to represent the saying above.
Law of conservation: the principle that electric
charge can neither be created nor destroyed.
The net quantity of electric charge, the amount
of positive charge minus the amount
of negative charge in the universe, is
always conserved.
The first written statement of the principle was
by American scientist and statesman Benjamin
Franklin in 1747.
Material in which an electrical charge can flow
Examples: copper, metal, your body, water
Poor conductor for electricity
Examples: rubber, glass, cotton
Friction- rub hands together
Contact- touch another person or an object
Charging of an object without direct contact
When we allow charges to move off (or onto) a
conductor by touching it
Why and how do we ground the electricity in
our house?
One side of the atom or molecule is induced to
be slightly more positive (or negative) than the
opposite side
Example:
Balloon and hair--- rub a balloon on hair for
static
Neg (-)
pos (+)
0
