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Circuits
Electricity &
Magnetism
Motors,
Speakers,
Etc.
1 pt
1 pt
1pt
1 pt
2 pt
2 pt
2pt
2pt
2 pt
3 pt
3 pt
3 pt
3 pt
3 pt
4 pt
4 pt
4pt
4 pt
4pt
5pt
5 pt
5 pt
5 pt
5 pt
Static
Electricity
Ohm’s Law
and Power
1pt
This type of
material
allows
electrons to
flow through it
What is a
conductor?
It is what
happens when
you get
shocked
What is excess
electrons jump
from you to the
object (or vice
versa) to even
out the charge?
It is what
happens when a
charged object
is held next to a
neutral one
What is the
neutral object
becomes
polarized (by
induction)?
The direction of
the force between
a piece of wool and
styrofoam after
rubbing them
together
What is
attraction?
The reason a
charged object can
attract a neutral one
What is “the neutral
object becomes
polarized, so the
charged object
attracts the near side
more than it repels
the far side (since it
is farther away)?
The “I” in Ohm’s
Law, and its
units
What is current,
amperes?
The current
flowing through a
220 Ohm light
plugged into the
wall (110 V)
What is .5 A?
The number of
1.5 V batteries
you need to push
a current of 1 A
through a 15
Ohm resistor
What is 10?
The power used
by a 5 A
hairdryer
plugged into the
wall (110 V)
What is
550 Watts?
The resistance
of a bulb which
consumes 55 W
of power from a
110 V wall
What is 220
Ohms?
The meaning of
the symbol
What is a
resistance (or
resistor)?
The type of circuit
Illustrated below
What is
parallel?
The total resistance in
the circuit below, if
each resistor is
5 Ohms
What is 15
Ohms?
A circuit breaker
in your house is
wired in this
way
What is in
series with the
sockets it
protects?
The total resistance in
the circuit below, if
each resistor is
5 Ohms
What is 5/3
Ohms?
This can be
created by
moving charges
What is a
magnetic field?
Moving magnets
will create this
What is an
electric field?
The magnetic
field near a
straight currentcarrying wire
looks like this
What is circular
(around the
wire)?
Where the
magnetic poles of
a coiled wire with
an electric
current are
located.
What is
on the top and
bottom?
The direction of the
force on a currentcarrying wire, relative
to the direction of the
current and magnetic
field lines
What is
perpendicular?
It converts
electrical energy
into kinetic
What is a
electric motor?
In a speaker the
motion of the
cone is caused
by this
What is the
varying force
between the
permanent
magnet and
electromagnet?
How does the force
on the coil change
if the current
changes direction
What is it
reverses?
A speaker can also
be used as this,
which produces
electrical energy
What is a
microphone?
The reason our
motors only rotate
in one direction
What is “the
unsanded part of the
coil prevents current
from flowing when it
would cause a force
in the opposite
direction”