Download Electric Charge And Static Electricity

Section 2-1
Objectives
 N.2.1.1.
Explain how electric
charges interact.
 N.2.1.2. Explain what an electric
field is.
 N.2.1.3. Describe how static
electricity builds up and transfers.
Electric Charge



Charges that are
the same repel
each other and
charges that are
different attract
each other. N.2.1.1.
Sound familiar?
Magnetic poles
follow the same
rules.
Electric Force
Electric Force is the attraction of
repulsion between electrically charges
particles.
 An electric field is the region around
a charges particle where electric
force is exerted on other charged
particles. Objective N.2.1.2. Sound familiar?
 Just like magnetic fields!!!

Electric Fields Around Single
Charges
 The
electric
field from a
positive charge
point outward
while the
electric field
from a negative
charge points
inward.
Electric Fields Around Multiple
Charges
 When
two
charges are
brought close
to each other,
their electric
fields are
combined.
Combined Electric Fields
Opposite
Likes
Combined Electric Fields: Cool
Picture
Static Electricity

Static means not
moving so, in
static electricity
charges build up
on an object but
they do not flow.
Objective N.2.1.3.
Transferring Charge
 There
are three methods for
transferring charge from on object
to another:
 Friction
 Conduction
 Induction
Friction
 Friction
is the
transfer of
electrons by
rubbing
objects
together.
Conduction
 Conduction
is
the transfer of
electrons by two
objects touching.
Sound familiar?
 Heat can also be
transferred by
conduction.
Induction
 When
a charged
object is brought
close to another
object, the
charges
separate by
induction. The
objects don’t
need to touch.
Static Discharge

When a negatively
charged object and
a positively
charged object are
brought close
together, electrons
may transfer until
both objects have
the same charge
again. Objective N.2.1.3.
Lightning
Lightning

Lightning is the
most dramatic
natural form of
static discharge.
Trillions upon
trillions of electrons
suddenly “jump”
from the cloud
base to the
ground.
Lightning
Lightning
Lightning
Lightning