Learning Set 5.1-5.2
an electromagnet creates a magnetic force
as long as a power source is connected
what device can detect a small electric currents
A galvanometer
a light bulb transforms electrical energy into
heat and light
an object that is positively charged
has more protons than electrons
what can iron fillings be used for
magnetic fields
what poles will attract a metal paper clip
both north and south
the grater voltage of a battery, the:
the larger amount of charge
a generator transforms
mechanical energy into electrical energy
the average hair dryer uses
750 watt's
how many poles do all magnets have
two
what can not be attracted to metal
copper
a dc battery provides
potential energy
the output energy of a generator is
less than the input energy
what property does earth have that causes grounding to strain static charges
it is a conductor
what prevents most charge particles from the sun from hitting the earth
Earths atmosphere
when a magnet is split in in half it will
create a new magnet with north and south poles
in a series secret, all devices receive the same
current
in a dry-cell battery the current goes:
from negative terminal to the positive one
what unit of electrical energy is sold by electric companies
kilowatt-hour
which energy transformation accurse in an eclectic generator
electrical to kinetic
like charges:
unlike charges:
Repel
Attract
a single path for a current is present in a
series currcut
Battery's produce
generators make
DC
AC
as more devices are added to a series circuit what happens to the energy
it decreases
what is the force between two electrons
repulsive