Chapter 23, Concept Question 7
Remember that electric field is a vector. For each rod, did you find the el ectric field at the central point,
and add these as vectors?
Figure 23- 24 shows four situations in which four very long rods extend into and out of
Chapter 21, Concept Question 2
Figure 21-13 shows three pairs of identical spheres that are to be touched together and then
separated.
Your answer is correct.
(a) Rank the pairs according to the magnitude of the charge transferred during touching, greates
PS 16 Exam 2
1.
Two parallel-plate capacitors with different capacitance but the
same plate separation are connected in series to a battery. Both capacitors are
filled with air. The quantity that is the same for both capacitors when they are
fully charged
Physics 117 B Sec 1 (Prof. Csorna) 2/1/07 TEST #1
Formulas and Constants:
1. An electron is projected with an initial velocity V0 =3.0 x 107m/s along the y-axis, which is the center
line between a pair of charged plates. The plates are 1.00 m long and are
1 6
Print Assignment: Chap23 :
Chap23
1. Test Bank, Question 3
Consider Gauss' law:
Which of the following is true?
must be the electric field due to the enclosed charge
If q = 0 then
everywhere on the Gaussian surface
If the three particles inside have
% (0 out of 15 correct)
1. A 5.0-C point charge is placed at the center of a cube. The electric flux in N m2/C
through one side of the cube is:
A. 0
B. 7.1 104
C. 9.4 104
D. 1.4 105
E. 5.6 105
2. A 30-N/C uniform electric field points perpendicularly towa
AP Physics Chapter 24 Review Sheet
1. An electron moves from point i to point f, in the direction of a uniform electric field.
During this placement:
A) the work done by the field is positive and the potential energy of the electron-field
system increases
1.
A current of 0.5 ampere exists in a 60-ohm
lamp. The applied potential difference is:
A. 15 V
B. 30 V
C. 60 V
D. 120 V
E. none of these
2.
A certain x-ray tube requires a
current of 7 mA at a voltage of
80 kV. The rate of energy
dissipation (in watts)
1.
"The sum of the currents into a junction equals the
sum of the currents out of the junction" is a
consequence of:
A.
Newton's
third law
B.
Ohm's law
C.
Newton's second law
D.
conservation of energy
Eonservation of charge
c.
2.
"The sum of the emf's and
Chapter 25, Concept Question 3
(a) In Fig. 25-19a, are capacitors 1 and 3 in series?
yes
no
(b) In Fig. 25- 19a, are capacitors 1 and 2 in parallel?
yes
no
(c) Rank the equivalent capacitances of the
four circuits shown in Fig. 25-19, greatest
first.
a>b=