phy outline ch17 stp
TRANSCRIPT
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Preview
Multiple Choice
Short Response
Extended Response
Chapter 17 Standardized Test Prep
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Multiple Choice
1. What changes would take place if theelectron moved from point A to point B inthe uniform electric field?
A.The electrons electrical potentialenergy would increase; its electricpotential would increase.
B.The electrons electrical potentialenergy would increase; its electricpotential would decrease.
C.The electrons electrical potentialenergy would decrease; its electric
potential would decrease.D.Neither the electrons electricalpotential energy nor its electric potentialwould change.
Standardized Test PrepChapter 17
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Multiple Choice, continued
1. What changes would take place if theelectron moved from point A to point B inthe uniform electric field?
A.The electrons electrical potentialenergy would increase; its electricpotential would increase.
B.The electrons electrical potentialenergy would increase; its electricpotential would decrease.
C.The electrons electrical potentialenergy would decrease; its electric
potential would decrease.D.Neither the electrons electricalpotential energy nor its electric potentialwould change.
Standardized Test PrepChapter 17
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Multiple Choice, continued
2. What changes would take place if theelectron moved from point A to point C inthe uniform electric field?
F.The electrons electrical potentialenergy would increase; its electricpotential would increase.
G.The electrons electrical potentialenergy would increase; its electricpotential would decrease.
H.The electrons electrical potentialenergy would decrease; its electric
potential would decrease.J.Neither the electrons electricalpotential energy nor its electric potentialwould change.
Standardized Test PrepChapter 17
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Multiple Choice, continued
2. What changes would take place if theelectron moved from point A to point C inthe uniform electric field?
F.The electrons electrical potentialenergy would increase; its electricpotential would increase.G.The electrons electrical potentialenergy would increase; its electricpotential would decrease.
H.The electrons electrical potentialenergy would decrease; its electric
potential would decrease.J.Neither the electrons electricalpotential energy nor its electric potentialwould change.
Standardized Test PrepChapter 17
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Standardized Test PrepChapter 17
Multiple Choice, continued
Use the following passage to answer questions 34.
A proton (q = 1.6 1019 C) moves 2.0 106 m inthe direction of an electric field that has a magnitudeof 2.0 N/C.
3. What is the change in the electrical potential energyassociated with the proton?
A.6.4 1025 J
B.4.0 106 V
C. +6.4 1025 J
D. +4.0 106 V
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Standardized Test PrepChapter 17
Multiple Choice, continued
Use the following passage to answer questions 34.
A proton (q = 1.6 1019 C) moves 2.0 106 m inthe direction of an electric field that has a magnitudeof 2.0 N/C.
3. What is the change in the electrical potential energyassociated with the proton?
A.6.4 1025 J
B.4.0 106 V
C. +6.4 1025 J
D. +4.0 106 V
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Standardized Test PrepChapter 17
Multiple Choice, continued
Use the following passage to answer questions 34.
A proton (q = 1.6 1019 C) moves 2.0 106 m inthe direction of an electric field that has a magnitudeof 2.0 N/C.
4.What is the potential difference between the protonsstarting point and ending point?
F.6.4 1025 J
G.4.0 106 V
H. +6.4 1025 J
J. +4.0 106 V
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Standardized Test PrepChapter 17
Multiple Choice, continued
Use the following passage to answer questions 34.
A proton (q = 1.6 1019 C) moves 2.0 106 m inthe direction of an electric field that has a magnitudeof 2.0 N/C.
4.What is the potential difference between the protonsstarting point and ending point?
F.6.4 1025 J
G.4.0 106 V
H. +6.4 1025 J
J. +4.0 106 V
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Standardized Test PrepChapter 17
Multiple Choice, continued
5. If the negative terminal of a 12 V battery is grounded,what is the potential of the positive terminal?
A.12 V
B. +0 VC. +6 V
D. +12 V
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Standardized Test PrepChapter 17
Multiple Choice, continued
5. If the negative terminal of a 12 V battery is grounded,what is the potential of the positive terminal?
A.12 V
B. +0 VC. +6 V
D. +12 V
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Standardized Test PrepChapter 17
Multiple Choice, continued
6. If the area of the plates of a parallel-plate capacitor isdoubled while the spacing between the plates ishalved, how is the capacitance affected?
F.Cis doubledG.Cis increased by four times
H.Cis decreased by 1/4
J.Cdoes not change
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Standardized Test PrepChapter 17
Multiple Choice, continued
6. If the area of the plates of a parallel-plate capacitor isdoubled while the spacing between the plates ishalved, how is the capacitance affected?
F.Cis doubledG.Cis increased by four times
H.Cis decreased by 1/4
J.Cdoes not change
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Standardized Test PrepChapter 17
Multiple Choice, continued
Use the following passage to answer questions 78.
A potential difference of 10.0 V exists across theplates of a capacitor when the charge on each plate
is 40.0 C.7. What is the capacitance of the capacitor?
A. 2.00 104 F
B. 4.00 104 F
C. 2.00 106 F
D. 4.00 106 F
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Standardized Test PrepChapter 17
Multiple Choice, continued
Use the following passage to answer questions 78.
A potential difference of 10.0 V exists across theplates of a capacitor when the charge on each plate
is 40.0 C.7. What is the capacitance of the capacitor?
A. 2.00 104 F
B. 4.00 104 F
C. 2.00 106 F
D. 4.00 106 F
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Standardized Test PrepChapter 17
Multiple Choice, continued
Use the following passage to answer questions 78.
A potential difference of 10.0 V exists across theplates of a capacitor when the charge on each plate
is 40.0 C.8. How much electrical potential energy is stored in the
capacitor?
F. 2.00 104 J
G. 4.00 104 JH. 2.00 106 J
J. 4.00 106 J
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Standardized Test PrepChapter 17
Multiple Choice, continued
Use the following passage to answer questions 78.
A potential difference of 10.0 V exists across theplates of a capacitor when the charge on each plate
is 40.0 C.8. How much electrical potential energy is stored in the
capacitor?
F. 2.00 104 J
G. 4.00 104 JH. 2.00 106 J
J. 4.00 106 J
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Standardized Test PrepChapter 17
Multiple Choice, continued
9. How long does it take 5.0 C of charge to passthrough a given cross section of a copper wire if I =5.0 A?
A. 0.20 sB. 1.0 s
C. 5.0 s
D. 25 s
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Standardized Test PrepChapter 17
Multiple Choice, continued
9. How long does it take 5.0 C of charge to passthrough a given cross section of a copper wire if I =5.0 A?
A. 0.20 sB. 1.0 s
C. 5.0 s
D. 25 s
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Standardized Test PrepChapter 17
Multiple Choice, continued
10. A potential difference of 12 V produces a current of0.40 A in a piece of copper wire. What is theresistance of the wire?
F.4.8 G.12
H.30
J.36
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Standardized Test PrepChapter 17
Multiple Choice, continued
10. A potential difference of 12 V produces a current of0.40 A in a piece of copper wire. What is theresistance of the wire?
F.4.8 G.12
H.30
J.36
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Standardized Test PrepChapter 17
Multiple Choice, continued
11. How many joules of energy are dissipated by a 50.0W light bulb in 2.00 s?
A. 25.0 J
B. 50.0 JC. 100 J
D. 200 J
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Standardized Test PrepChapter 17
Multiple Choice, continued
11. How many joules of energy are dissipated by a 50.0W light bulb in 2.00 s?
A. 25.0 J
B. 50.0 JC. 100 J
D. 200 J
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Standardized Test PrepChapter 17
Multiple Choice, continued
12. How much power is needed to operate a radio thatdraws 7.0 A of current when a potential difference of115 V is applied across it?
F. 6.1 102
WG. 2.3 100 W
H. 1.6 101 W
J. 8.0 102 W
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Standardized Test PrepChapter 17
Multiple Choice, continued
12. How much power is needed to operate a radio thatdraws 7.0 A of current when a potential difference of115 V is applied across it?
F. 6.1 102
WG. 2.3 100 W
H. 1.6 101 W
J. 8.0 102 W
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Standardized Test PrepChapter 17
Short Response
13. Electrons are moving from left to right in a wire. Noother charged particles are moving in the wire. Inwhat direction is the conventional current?
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Standardized Test PrepChapter 17
Short Response, continued
14. What is drift velocity, and how does it compare withthe speed at which an electric field travels through awire?
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Standardized Test PrepChapter 17
Short Response, continued
14. What is drift velocity, and how does it compare withthe speed at which an electric field travels through awire?
Answer: Drift velocity is the net velocity of a chargecarrier moving in an electric field. Drift velocities in awire are typically much smaller than the speeds atwhich changes in the electric field propagate throughthe wire.
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Standardized Test PrepChapter 17
Short Response, continued
15. List four factors that can affect the resistance of awire.
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Standardized Test PrepChapter 17
Short Response, continued
15. List four factors that can affect the resistance of awire.
Answer: length, cross-sectional area (thickness),temperature, and material
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Standardized Test PrepChapter 17
Extended Response
16. A parallel-plate capacitor is made of two circularplates, each of which has a diameter of 2.50 103 m.The plates of the capacitor are separated by a spaceof 1.40 104 m.
a. Assuming that the capacitor is operating in a vacuumand that the permittivity of a vacuum (e0 = 8.85 10
12C2/Nm2) can be used, determine the capacitance ofthe capacitor.
S d di d T P
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Standardized Test PrepChapter 17
Extended Response, continued
16. A parallel-plate capacitor is made of two circularplates, each of which has a diameter of 2.50 103 m.The plates of the capacitor are separated by a spaceof 1.40 104 m.
a. Assuming that the capacitor is operating in a vacuumand that the permittivity of a vacuum (e0 = 8.85 10
12C2/Nm2) can be used, determine the capacitance ofthe capacitor.
Answer: 3.10 1013 F
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Standardized Test PrepChapter 17
Extended Response, continued
16. A parallel-plate capacitor is made of two circularplates, each of which has a diameter of 2.50 103m. The plates of the capacitor are separated by aspace of 1.40 104 m.
b. How much charge will be stored on each plate of thecapacitor when the capacitors plates are connected
across a potential difference of 0.12 V?
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Standardized Test PrepChapter 17
Extended Response, continued
16. A parallel-plate capacitor is made of two circularplates, each of which has a diameter of 2.50 103m. The plates of the capacitor are separated by aspace of 1.40 104 m.
b. How much charge will be stored on each plate of thecapacitor when the capacitors plates are connected
across a potential difference of 0.12 V?
Answer: 3.7 1014 C
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Standardized Test PrepChapter 17
Extended Response, continued
16. A parallel-plate capacitor is made of two circularplates, each of which has a diameter of 2.50 103m. The plates of the capacitor are separated by aspace of 1.40 104 m.
c. What is the electrical potential energy stored in thecapacitor when fully charged by the potentialdifference of 0.12 V?
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Standardized Test PrepChapter 17
Extended Response, continued
16. A parallel-plate capacitor is made of two circularplates, each of which has a diameter of 2.50 103m. The plates of the capacitor are separated by aspace of 1.40 104 m.
c. What is the electrical potential energy stored in thecapacitor when fully charged by the potentialdifference of 0.12 V?
Answer: 2.2 1015 J
Standardi ed Test Prep17
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Standardized Test PrepChapter 17
Extended Response, continued
16. A parallel-plate capacitor is made of two circularplates, each of which has a diameter of 2.50 103m. The plates of the capacitor are separated by aspace of 1.40 104 m.
d. What is the potential difference between a pointmidway between the plates and a point that is 1.10 104 m from one of the plates?
Standardized Test Prep17
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Standardized Test PrepChapter 17
Extended Response, continued
16. A parallel-plate capacitor is made of two circularplates, each of which has a diameter of 2.50 103m. The plates of the capacitor are separated by aspace of 1.40 104 m.
d. What is the potential difference between a pointmidway between the plates and a point that is 1.10 104 m from one of the plates?
Answer: 3.4 102 V
Standardized Test Prep17
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Standardized Test PrepChapter 17
Extended Response, continued
16. A parallel-plate capacitor is made of two circularplates, each of which has a diameter of 2.50 103m. The plates of the capacitor are separated by aspace of 1.40 104 m.
e. If the potential difference of 0.12 V is removed fromthe circuit and the circuit is allowed to discharge untilthe charge on the plates has decreased to 70.7percent of its fully charged value, what will the
potential difference across the capacitor be?
Standardized Test PrepC 17
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Standardized Test PrepChapter 17
Extended Response, continued
16. A parallel-plate capacitor is made of two circularplates, each of which has a diameter of 2.50 103m. The plates of the capacitor are separated by aspace of 1.40 104 m.
e. If the potential difference of 0.12 V is removed fromthe circuit and the circuit is allowed to discharge untilthe charge on the plates has decreased to 70.7percent of its fully charged value, what will the
potential difference across the capacitor be?
Answer: 8.5 102 V