V1+Test+FyANVC08+Ch+16 19+Electricity+G Level

8/3/2019 V1+Test+FyANVC08+Ch+16 19+Electricity+G Level

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Test Ch6FyANVC08 Test Ch 16-19 Electricity NV-College

Directions Please Write your name on all of the papers on your table, NOW!

Test time 14:00-15:20 November 4, 2009

Resources Calculators, and Formulas for the National Test in Mathematics Courses A &

B, and the formula sheet for Physics A, FYANV-College. You may also useyour personalized blue-booklet. The booklet must have your name and no

calculations or solution to any problem are supposed to be on it.

The test: The test is a G-level test and consists of a total of 25 questions. Most of

problems are multiple-choice. Answer all of questions. Below each problem

some space is provided. You are required to show your calculations.

The VG-MVG-level test is given on Friday November 9, 2009.

Score The maximum score is 53 points.

Mark levels The maximum number of points you can receive for each solution is indicated

after each problem.

G: 28 points

VG: -

MVG: -

Have Fun

Behzad

Only the marked problems in the box below will be graded.

Electrostatics:ES DC DC DC DC DC DC ES ES ES Ch 16-19

1 2 3 4 5 6 7 8 9 10 11 12 13 Total Minimum G

2 2 2 2 3 2 3 3 2 2 1 2 2 28

14 15 16 17 18 19 20 21 22 23 24 25 53 26,5

2 2 2 2 2 2 3 1 2 3 2 2 25

ES ES ES ES DC DC DC ES ES ES ES DC ELECTRICITY

[email protected] for sale.Free to use for educational purposes. 1/14


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Base your answers to the problems 1-4 on the figure below which illustrates two point

charges Q

Base your answers to the problems 1-4 on the figure below which illustrates two point

charges Q CC0.51 = and CQ 0.52 = . The charges are pinned to the page of the paper,

and therefore are stationary.

1. At which point the magnitude of the electric field is zero? [1]a. A b.c.d.e. None

Explain. [1] Answer: Alternative:_______________

a.

B

C

D

Why?

2. At which point the electric potential is zero? [1]A

b.c.d.e. None

Why? Explain. [1] Answer: Alternative:_______________

B

C

D

A B C

D

CQ 0.51 = CQ 0.52 =

cm0.5 cm0.5


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3. If a unit positive charge move from the point A to the point , the potential energyof the charge

[2]

a. increasesb. decreasesc. first increases, then decreasesd. first decreases, then increasese. remains constant through out the journey.

Answer: Alternative:_______________

C

4. Moving CQ 0.51 = and Q C0.52 = awaa. increaseb. decreasec. first increases, then decreased. first decreases, then increase


y from each other would cause their

electric potential energy to [1]

e. remains constant through out the journey.Why? Explain. [1]


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Answer questions 5-8 based on the circuit below where Answer questions 5-8 based on the circuit below where === 0.2321 RRR , and

== 0.54 RR .4

16

0

e Am r

5. The equivalent resistance of the circuit is [1]a. 0. b. 50. c. .2 0d. 25.0 e. 0.4

Why? Show your calculations below. [2] Answer: Alternative:_______________

6. Th mete A shows: [1]


a. A0.2 b. 0.4 Ac. A.8 0d. A0. 16e. A0.1

A1R 2R

1AVV 0.8=

3R4R 5R

5A


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7. The meter 1A shows: [1]Am

: Alternative:_______________

The Ammeter shows: [1]

a.b.c.

. [2] Answer: Alternative:_______________

Ho l follow through the light

it is

[1]

a.b.c.d.e.


a. A0.2 b. A0. 4c. A0.8 d. A0.16 e. 0.1 A

Why? Show your calculations below. [2] Answer

8. 5A

A0.2

A0.4

A0.8

d. A0.16 e. A0.1 Why? Show your calculations below

9. The power and voltage on the light bulb read 400 W240V. w many amperes wil

bulb if connected to V220 ?

A00088

A8.1

A55.0

A5.2

mA55.0


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W000

c.d.e.

Hydrogen atom? We may assume the average distance of the electron from the

of hydrogen atom is . [1/0]

a.

W000 30

kr8.1

c. kr4.5 d. kr6 e. kr7.2

Hydrogen atom? We may assume the average distance of the electron from the

of hydrogen atom is m101053.0

. [1/0]

a.

10.At kwhkr/9.0 , what does it cost to use a 2 hair dryer for min ?[1]

a. kr9.0 10.At kwhkr/9.0 , what does it cost to use a 2 hair dryer for min ?

[1]

a. kr9.0 30

b.b. kr8.1 kr4.5

kr6

kr7.2

Why? Show your calculations below.[1] Answer: Alternative:_______________Why? Show your calculations below.[1] Answer: Alternative:_______________

11.What is the approximate electrostatic force between the electron and proton of a11.What is the approximate electrostatic force between the electron and proton of anucleusnucleus m

101053.0

N8102.8 attractive.

b. N8102.8 repulsive.c. N8102.8 attractive.d. N8102.8 repulsive.



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12.Two identical metallic sphere carry charges mCQ 0.10112.Two identical metallic sphere carry charges mCQ 0.101 = and mCQ 0.42 = . Tspheres are brought together, and then separated. The final charge on each sphere wil

be: [1]

he

l

4

hy? Show your calculations below. [1] Answer: Alternative:_______________

Answer:

14.When you bring a charged insulator rod close toof water is affected by the charged rod. Why?

Answer:

a. mC6 0.b. mC3 0.c. mC1 0.d. mC 0.6e. 0.0

W

13.Both the Van de Graff generator and the lady in the picture are charged. Why does herhair stands out? Explain. [2/0]

a thin stream of tap water. The stream

Explain. [2/0]


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15.Two charged Ping-Pong balls separated by a distance of m00.2 exert an electricforce of mN00.10 on each other. What will be the force if the Ping-Pong balls are

brought closer, to a separation of cm0.50 from each other? [1]

a. .b. .c. .d. .

xplain your reasoning: [1] Answer: Alternative:_______________

6.How much work is required to move a single electron through a potential difference of

mN50.2

mN00.40

mN00.160

mN00.10

E

1

kV0.1 ? [1/0]

a. J19106.1 .b. J22106.1 .c. J106.1 .16d. J3100.1 .



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117.Which circuit diagram shows voltmeter7.Which circuit diagram shows voltmeter V and ammeter A correctly positioned to

A: B:

[1/0]

[1] Answer: Alternative:_______________

measure the total potential difference of the circuit and the current through each

resistor? [2/0]

C: D:


18.The internal resistance of an excellent voltmeter must be:a. Very small.b. Very large.

Why? Explain.

1R 2R

V

A

1R 2R

V

A

V

1R 2R A

V

1R 2R

A


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19.The diagram below represents currents in a segment of an electric circuit. What is thereading of the ammeter

19.The diagram below represents currents in a segment of an electric circuit. What is thereading of the ammeter A ? [1/0]

a. mA1 .b. mA2 .c. mA3 .d. mA4 e. mA5

Why? Show your calculations below. [1]

.A positive charge


20 CQ 0.51 = and a negative charge CQ 0.52 = are placed on a

plane surface as illustrated in the figure below. A positive p ge is placed at the

point P. The distance between is exactly equal to the distance .

What is the direction of the resultant force on the point charge P? Explain [1]

Towards a.

Towards b.

Towards c.

Towards d.

Towards e.

g.

hy? Show your calculations below. [2] Answer: Alternative:_______________

oint char

1PQ 2PQ

a.b.c.d.e.f. Towards f.g. Towardsh. Towards h.

W

mA5

mA3

mA2

mA7

A

mA1

mA4

abh

c

d

e

f

gP

Q1

Q2


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Base your answers to the problems 21-24 on the figure below which illustrates an electro

projected into the region between two parallel charged plates which are mm0.2 apart. The

n

n the plates iselectric field betweeC

MNE 0.2=

mm0.2

21.In which direction will be deflected? [1/0]a. Toward the bottom of the page.b. Toward the top of the page.c. Into the paged. Out of the page.e. It is not going to be deflected. Answer: Alternative:_______________

d by the electron during the time it is moving between the plates is:

ownward toward the bottom of the page. [1]

c. Toward the top of the page.d. Downward toward the bottom of the page.e. The electron is not going to be deflected. Therefore, the total force on the electron

is zero.

Why? Show your calculations below. [2] Answer: Alternative:________________

22.The force experiencea. N13 D102.3 b. N13102.3 Toward the top of the page.

N19

102.3

N19102.3


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23.The electron is replaced by a proton. Compared to the magnitude of the force on theelectron, the magnitude of the force on the proton will be [

a. greater.1]

W Answer: Alternative:________________

24.The potential difference across the two plates is: [1/0]a. .b. .c.d.e.


b. the same.c. less.

hy? Explain. [1]

kVV 0.4=

kVV 0.1=

MVV 0.4=

VV 0.4=

mVV 0.4=


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25.The power and voltage on the light bulb read 400 W 240V. We take it to the USAwhere the electricity used in a common house is V110 . When it is connected to the

power source [1]

a. the light bulb will burn.b. It will work normally as a W400 light bulb.c. It will work as a W100 light bulb.d. It will work as a W800 light bulb.e. It will not work at all.


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