Transcript Parallel Circuits

Parallel
• Parallel circuits
• Current in parallel circuits
• Voltage in parallel circuits
Parallel Circuits
Oh! It’s nice to be
together again after a
day of work!
Let’s have some
dinner!
Oops!!!
Hello
my
dear!
Hello
love!
See you
later, I’m
going to
work!
Bye! I’m
going too!
Spot the closed circuits
Follow the circuit with your finger and find out
where the closed circuits are!!!
Working
Not working
Draw a closed line around the closed circuits and say if they are working
Working
Working
Working
Current through parallel circuits
Now,
Connect
move
anthe
ammeter
ammeterininthe
circuit
seriesas
with
shown
the
and
lightrepeat
bulbs the
and
reading
measure
in the
each
place.
current.
Record
Report
in
your
yourworksheet.
reading in
your worksheet.
Current through parallel circuits
They
Less current
electrons
would
take
different
flow
through
paths
the
at
The
Can
What
current
think
do
would
you
of
in
anotice
the
the
higher
junctions,
resistance
parallel
about
reason
happen
the
why
branches
tocurrent
the
this
because
and
equal
there
is
in 1/3
happens?
current
theanof
circuit?
ifthe
one of
are
amount
three
through
current
the resistors
before
had
the
(Hint:
think
about
possible
the
ways.
two,
parallel
higher
resistance
branches.
the other
current
of
However,
because
the
they
than
the others?
electrons
as
cars
spread
electrons
evenly
preferin
along the
each
the
flow
branch
through
motorway
with
because
the
easiest
thepath
junctions)
resistors
(with lessare the
same.
resistance).
Current through parallel circuits
Now,
Connect
move
a the
voltmeter
voltmeterininthe
circuit
parallel
aswith
shown
the
and
lightrepeat
bulbs the
and
reading
measure
in the
each
place.
voltage.
Record
Report
in
your
yourworksheet.
reading in
your worksheet.
Current through parallel circuits
The output voltage of
It
Can
The
What
is
voltage
you
dosame
would
think
you(E.M.F.)
across
notice
of a
thethe
battery
is
the same
asthis
the
across
reason
each
about
happen
resistor
the
all
why
tovoltage
these
voltage
across
resistors.
happens?
would
acrossstay
values
of
thevoltage
(Hint:
theeach
resistor,
think
same.
resistors?
if
oneabout
ofbecause
thewater
the E.M.F. = sum of
in
resistors
a system
hadof
potential drop
pipes
higherthat
resistance
splits
across
components
in
than
the others?
paths,
in
adifferent
series
circuit.
but
is runresistor
by the
But each
makes pump)
an individual
same
series circuit with
the battery.