Transcript Electricity Review - Petoskey Public Schools

CHAPTER 1
ELECTRICITY
The amount of charge flowing
past a point in a given time

CURRENT
The closed path for electrons
to flow

CIRCUIT
The unit used to measure
current

AMPS
A ________ _________ protects
your home from circuit overloads

Circuit breaker
List 3 ways to produce static
electricity
http://www.regentsprep.org/Regents/physics/phys03/aeleclab/default.htm
FRICTION
 CONDUCTION
 INDUCTION

Like charges will _______
each other and opposites will
_____________

REPEL

ATTRACT
The electricity from the outlets
is ______________ current
and has a voltage of _____
ALTERNATING
 120 VOLTS

The largest example of electric
discharge

LIGHTNING!
_________ allow electrons to
flow freely through them.
CONDUCTORS
Heating elements contain
metals of ____________
resistance

HIGH!!
_________ can hold a static
charge but do not allow the
flow of electrons.
INSULATORS
Copper is used in electrical
wiring because
It is a conductor with LOW resistance.
In this circuit, ________
energy is converted to
electrical energy.

CHEMICAL
Increasing resistance will
___________ the current.

DECREASE
List 4 ways to reduce
resistance in a conductor.
Shorten the wire
 Use a good conductor
 Make the wire thicker
 Reduce the temperature of the wire

If voltage increases, what
happenS to the current?

IT INCREASES!!
In the case of Lightning,
_________ energy is
converted to heat, light and
sound

ELECTRICAL
Electric power is measured in
WATTS OR
 KILOWATTS

Potential difference is
measured in

VOLTS
The source of potential
difference in a circuit

BATTERY
If the voltage in a circuit is 20
and the resistance is 5, what
is the current in amps?
4
amps
Why in a parallel circuit do the
bulbs stay lit even if one goes
out?

Each has its own path for electrons to
flow
Describe the flow of energy
through a circuit.

Chemical reactions in electrolyte push
electrons out of the battery, through the
conductor, to the load and back to the
battery.
How does the VanDegraaf
generator work??
Why can you make a balloon
stick to a wall?