27) A capacitor has a charge Q. The plates are then pulled apart so that the distance between them islarger. After the plates are pulled apart, which of the following statements is true regarding thecapacitance and the potential difference across its plates?A. Both the capacitance and the potential difference decreaseB. Both the capacitance and the potential difference increaseC. The charge and the electric field remain constantD. The capacitance decreases and the potential difference increasesE. The capacitance increases and the potential difference decreases28) A 75 W electric blanket carries a 3.5 A current. What voltage does it run at?A. 21.4 VB. 0.0467 VC. 262.5 VD. 0.163 VE. 48.7 V29) Consider the circuit shown in the figure to the right. If R₁ > R2,which resistor dissipates more power?A. R₁B. R2C. They dissipate the same amount of power30) A uniform 9.0 T magnetic field points to the right. A 6.0 m longwire is carrying a 25 A current in the direction shown. What is themagnitude of the force on the wire?A. 125 NB. 350 NC. 400 ND. 525 NE. 675 N31) For bonus points, what is the direction of the force in the previous problem?A. To the rightB. To the leftC. Out of the pageD. Into the pageE. Up the pageR₁ww30°R₂wwB 21) An electron is released from rest at the black dot shown in the figure. Afterward, the electron willdo which of the following?A. Remains at rest at the dot+50 VB. Moves downward with constant speedC. Moves downward with increasing speedOVD. Moves upward with constant speed-50 VE. Moves upward with increasing speed22) A 20 μF capacitor is connected to a battery and allowed to fully charge. This results in 320 µC ofcharge on each plate. How much electric potential energy is stored in this capacitor?A. 1.10 mJB. 2.56 mJC. 6.33 mJD. 8.82 mJE. 10.2 mJ23) How much electric potential energy does a 9 V battery provide to 0.30 C of charge as it moves fromthe negative to the positive terminal?A. 30 JB. 24.3 JC. 2.7 JD. 0.81 JE. 0.033 J17575the160424) For three resistors connected in series, what physical quantity (or quantities) must be the same forall three resistors?A. CurrentB. Potential differenceC. ResistanceD. A and CE. B and CA. it points out of the pageB. it points up the pageC. it points into the pageD. it points down the pageE. it points to the left25) For the current shown in the figure to the right, what is the direction of the magneticfield it creates at the point indicated by the black dot?asm●IØoral cotone A (0526) A glass bead carries a charge of -3.5 nC. At a certain point in space, the strength of the electric fieldis measured to be 78750 N/C. How far away from the bead is this point?A. 0.04 cmB. 2.0 cmC. 42 cmD. 12 cmE. 5.0 cm

Answered: Image /qna-images/answer/fa369d68-a0f6-416f-ad46-d5e8f9ee3b79.jpg

27) A capacitor has a charge Q. The plates are then pulled apart so that the distance between them is larger. After the plates are pulled apart, which of the following statements is true regarding the capacitance and the potential difference across its plates? A. Both the capacitance and the potential difference decrease B. Both the capacitance and the potential difference increase C. The charge and the electric field remain constant D. The capacitance decreases and the potential difference increases E. The capacitance increases and the potential difference decreases

27) A capacitor has a charge Q. The plates are then pulled apart so that the distance between them is larger. After the plates are pulled apart, which of the following statements is true regarding the capacitance and the potential difference across its plates? A. Both the capacitance and the potential difference decrease B. Both the capacitance and the potential difference increase C. The charge and the electric field remain constant D. The capacitance decreases and the potential difference increases E. The capacitance increases and the potential difference decreases

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Dielectric Constant Of Water

Water constitutes about 70% of earth. Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.

Electrostatic Potential and Capacitance

An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.

Question

27) A capacitor has a charge Q. The plates are then pulled apart so that the distance between them is
larger. After the plates are pulled apart, which of the following statements is true regarding the
capacitance and the potential difference across its plates?
A. Both the capacitance and the potential difference decrease
B. Both the capacitance and the potential difference increase
C. The charge and the electric field remain constant
D. The capacitance decreases and the potential difference increases
E. The capacitance increases and the potential difference decreases
28) A 75 W electric blanket carries a 3.5 A current. What voltage does it run at?
A. 21.4 V
B. 0.0467 V
C. 262.5 V
D. 0.163 V
E. 48.7 V
29) Consider the circuit shown in the figure to the right. If R₁ > R2,
which resistor dissipates more power?
A. R₁
B. R2
C. They dissipate the same amount of power
30) A uniform 9.0 T magnetic field points to the right. A 6.0 m long
wire is carrying a 25 A current in the direction shown. What is the
magnitude of the force on the wire?
A. 125 N
B. 350 N
C. 400 N
D. 525 N
E. 675 N
31) For bonus points, what is the direction of the force in the previous problem?
A. To the right
B. To the left
C. Out of the page
D. Into the page
E. Up the page
R₁
ww
30°
R₂
ww
B

21) An electron is released from rest at the black dot shown in the figure. Afterward, the electron will
do which of the following?
A. Remains at rest at the dot
+50 V
B. Moves downward with constant speed
C. Moves downward with increasing speed
OV
D. Moves upward with constant speed
-50 V
E. Moves upward with increasing speed
22) A 20 μF capacitor is connected to a battery and allowed to fully charge. This results in 320 µC of
charge on each plate. How much electric potential energy is stored in this capacitor?
A. 1.10 mJ
B. 2.56 mJ
C. 6.33 mJ
D. 8.82 mJ
E. 10.2 mJ
23) How much electric potential energy does a 9 V battery provide to 0.30 C of charge as it moves from
the negative to the positive terminal?
A. 30 J
B. 24.3 J
C. 2.7 J
D. 0.81 J
E. 0.033 J
17575
the
1604
24) For three resistors connected in series, what physical quantity (or quantities) must be the same for
all three resistors?
A. Current
B. Potential difference
C. Resistance
D. A and C
E. B and C
A. it points out of the page
B. it points up the page
C. it points into the page
D. it points down the page
E. it points to the left
25) For the current shown in the figure to the right, what is the direction of the magnetic
field it creates at the point indicated by the black dot?
asm
●
I
Ø
oral cotone A (05
26) A glass bead carries a charge of -3.5 nC. At a certain point in space, the strength of the electric field
is measured to be 78750 N/C. How far away from the bead is this point?
A. 0.04 cm
B. 2.0 cm
C. 42 cm
D. 12 cm
E. 5.0 cm

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