Transcript Series and Parrallel

Physics Bell ringer
• Get a board and marker
• Quietly wait for review
Review Game Eureeka
1. What sub-atomic
particle is responsible
for the acquiring of
static charge?
2. A negatively
charged object is
brought near a negative
electroscope, what will
happen to the leaves?
3.Draw a series circuit
consisting of a 9-V
source, a 2-Ω and a
4-Ω resistor
Leave it on your board
Using a 3-A current:
4. Which of the
resistors will have the
highest potential
energy drop
associated with it?
5. The Coulomb is
the unit to measure
what?
6. If the charge on
each
of the
twosame
small
It
stays
spheres doubles,
Δcharge
doesn’t
Δ
what will happen to
gravity
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the force of gravity
between them?
6. It takes 15-J to
move 3-C of positive
charge. What is the
Electric potential at
this point?
7. Which will have
more resistance…
A small/large wire
A long/short wire
A copper or glass wire
8. If the voltage
across a 12-Ω resistor
is 4.0-V, the current
through the resistor is
what?
9. The electrical resistance of a
metal wire could be decreased
by
• Increasing the diameter
• Increasing its length
• Increasing its temperature
10. If the temperature of
a conductor is
increased, the amount
of current at 10-Volts
would do what?
11. If the length of a
conductor increased
what would happen to
the amount of current in
a 10-Volt carrying wire?
14. What is the potential
difference of the
source?
10-V
10-V
10-V
16. What is the current through the
second resistor?
3.0 Ω
3.0 Ω
3.0-V
3.0 Ω
Calculate the power
dissipated in a 100-Ω
resistor if there is a
4.0-V potential
difference established
across it.
The Milikin oil drop
experiment showed
the existence of what?
1.6 x 10-17 Coulombs
19. A charge of 100elementray charges is
equivalent to how
many Coulombs?
It becomes 1/9 as strong
As the distance b/t
two point charges is
tripled, what happens
to the force b/t the
charges?
21. A charge of 5.0-C
moves through a
circuit in 0.5-seconds.
How much current is
flowing in the circuit?
Interlude for random guessing
Which picture am I thinking of?
23. The graph below shows the relationship b/t
potential difference and current for four
resistors
Which resistor has the greatest
resistance?
Voltage
Draw a Voltage vs.Current graph
referring to a real material as
opposed to one following
Ohm’s Law
Current
That is the end
• Your test is Wednesday
• Tally your points