Transcript Electrostatics_and_DC_Circuits_Jeopardy

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think before
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Electrostatics
Coulomb’s
Law
E-Fields
Ohm’s Law
Equivalent
Resistance
Lab Stuff
E-Fields
Ohm’s
Law
Equivalent
Resistance
Lab Stuff
100
100
100
100
100
200
200
200
200
200
200
300
300
300
300
300
300
400
400
400
400
400
400
500
500
500
500
500
500
Electrostatics
Coulomb’s
Law
100
What is
A negatively charged rod is brought
close to an electroscope and two
aluminum leaves separate. The charge
on the leaves is
(A) Both positive
(B) Both negative
(C) One positive; one negative
(D) Impossible to determine
What is (B) both
negative?
What is (2)
increase?
If you place excess charge on a
metal object, after some time…
(A)The charge will stay in the
area you placed it.
(B)The charge will concentrate
into a smaller area.
(C)The charge will spread out
evenly.
(D)There is no way to know.
What is… The charge will
spread out evenly?
If you place excess charge on a
rubber object, after some
time…
(A)The charge will stay in the
area you placed it.
(B)The charge will concentrate
into a smaller area.
(C)The charge will spread out
evenly.
(D)There is no way to know.
What is The charge
will stay in the area
you placed it.
From the picture, what can you
conclude about the charges?
1)
have opposite charges
2)
have the same charge
3)
all have the same charge
4) one ball must be neutral (no charge)
3)
all have the same charge
Two identical charges Q,
separated by a distance R, feel
an electric force F. By what factor
does the force change if the
distance is doubled (2R)?
(A) 2F
(D) F/2
(B) 4F
(E) F/4
(C) F
What is (e) F/4?
What is…
What is 2.4 N?
What is…
What are the signs of the charges
whose electric fields are shown?
A)
B)
C)
D)
E) no way to tell
What is…
A)
B)
C)
D)
E) no way to tell
What is…
What is ?
If the charge on the
left is +Q, this is the
charge on the right.
What is +3Q?
This is the direction of
the E-field at point P.
P
+Q
-Q
What is ?
P
+Q
-Q
What is…
A
0.20 A
3.0 V
R
R = _____________
V
What is 15 ohms?
Daily
Double!
This is the current
through resistor R
What is 1 Amp?
This is the reading of
voltmeter V
What is 40 volts?
If the voltage is
doubled and the
resistance is halved,
by what factor does
the current change?
What is it
increases by a
factor of 4?
This is the equivalent
resistance
What is
R = R1 + R2
R=5+5
R =10 Ω
What is 2.4 ohms?
This is the equivalent
resistance
What is 0.5 ohms?
This is the equivalent
resistance
What is 3 ohms?
Three resistors, 4 ohms, 6 ohms,
and 8 ohms, are
connected in parallel in an
electric circuit. The
equivalent resistance of the
circuit is
(1) less than 4 Ω
(2) between 4 Ω and 8 Ω
(3) between 10. Ω and 18 Ω
(4) 18 Ω
What is (1) less
than 4 ohms?
This is the resistance of
the ceramic resistor shown
gold
green
black
brown
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White
Gold
0
1
2
3
4
5
6
7
8
9
5%
What is 1,000,000
ohms?
Voltage (V)
Voltage
What is 10
ohms?
A 15-ohm resistor, R1, and a 30.-ohm
resistor, R2, are to be connected in
parallel between points A and B in a
circuit containing a 90.-volt battery.
Show the two resistors connected in
parallel between points A and B.
300a
In a series circuit,
this is the same for
all the resistors.
What is the
current?
Daily
Double!
This/These bulb(s)
will light.
What is…
Final
Jeopardy
V-I-R charts
This is the resistance
of resistor R
What is…
190 ohms?