The
amount
of
current
(
in
amps
)
flowing
through
a
circuit
will
partly
depend
on
the
electromotive
force
(
EMF
)
of
the
electrical
supply
.
Electromotive
force
is
measured
in
volts
and
is
generally
called
____________________
.
It
depends
on
the
"
strength
"
of
the
electrical
supply
.
The
amount
of
current
will
also
depend
on
electrical
____________________
.
This
value
,
in
ohms
,
is
a
measure
of
how
easily
current
can
flow
through
the
conductors
and
components
in
a
circuit
.
For
example
,
a
lamp
creates
resistance
because
the
____________________
,
the
metal
wire
inside
it
,
is
very
thin
.
This
limits
the
amount
of
current
that
can
flow
.
Resistance
also
depends
on
the
materials
used
as
____________________
.
For
example
,
copper
has
a
low
resistance
and
so
is
a
good
conductor
.
Materials
with
very
high
resistance
,
such
as
plastics
,
are
called
eletrical
____________________
.
Only
very
high
voltages
cause
current
to
flow
through
them
.
Materials
that
are
good
insulators
are
used
to
insulate
conductors
.
An
example
is
plastic
insulation
around
electric
wires
.
This
stops
people
from
touching
the
conductor
and
,
if
it
is
live
(
carrying
current
)
,
from
getting
a
dangerous
electric
____________________
.
