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ridman2000
#1 Jan 27 2009 02:08pm
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alright my book doesnt give straight up explinations, im supposed to figure out the answers to my questions based on interpretation......and im not interpreting the way my school wants me to i guess, so i need some help. The reason each question is missing an answer choice is because ive already eliminated 1 answer from each of the questions.

These are the pictures that go with the questions:







3.In the circuit shown in Figure A1, suppose that the value of R1 is 100 kOHM and the value of R2 is 470 kOMH. At which of the following locations in the circuit would you measure the highest voltage with your meter?

A. Between points A and C
C. Between points B and C
D.Between points B and E

5. Imagine that you've properly connected your multimeter into an operating circuit, and the meter's function/range switch is set to read DC voltage in the 20 V range. The meter displays a "1" in the most significant digit position. this indicates that

B. The power to the circuit is turned off
C.The voltage at the point under test is greater than 20 V
D. The function/range switch should be set to the next lowest range

6. Silver has the highest conductivity rating of any common metal. which of the following correctly ranks metals in decreasing levels of conductivity?

A.Silver,zinc,gold,platinum
B.Silver,copper,aluminum,lead
D.Silver, copper, gold, aluminum

7.Look at the circuit shown in Figure A2. Switch S1 is open as shown, and R1 and R2 each have a value of 100 kOHM. If you connect your meter's test probes to points A and B in the circuit, what voltage would you measure?

A. 9V
B. 6V
D. 0V

9.Your using your meter to make voltage measurement in the circuit shown in Figure A2. Your meter is connected between points A and C, and your getting a reading of 6V on the display. What can you conclude from this reading?

A. Switch S1 is open
B.Resistor R2 has a resistance value that's twice the value of either R1
D. Resistors R1 and R2 have equal resistance values

10.In the circuit shown in figure A2 where R1 and R2 have equal resistance values, when switch S1 is closed what voltage should you read across R2 with your meter?

A. 0V
C. 3V
D. 6V

12.Look at the circuit shown in Figure A3. with switch S1 closed, you're making vlotage measurements with your meter. Assume that each of the four resistors has aresistance value of 100 kOHM. You measure 3.6V across resistor R1, 1.2V across R2, and 2.4V across resistor R4. What is the battery voltage of the circuit?

A. 10V
B. 6V
D. 2V

13.Assume that each of the four resistors has a resistance value of 100 kOHM. With switch S1 open as shown, you measure the voltage across each resistor with your meter. Which of the following statements is correct?

A. Resistors R1, R2, R3 will dissapate equal amounts of power
C. Resistors R4 and R1 will dissapate equal amounts of power
D. Resistor R3 will dissapate the most power

14.Assume that each of the four resistors has aresistance value of 100 kOHM, what will be the total resistance of the circuit with teh switch S1 closed?

A. 100kOHM
B. 167 kOHM
C. 280 kOHM

15.Assume that each of the four resistors has aresistance value of 200 kOHM, which of the resistors will dissapate the most power?

B. R3
C. R2
D. R1

18. In figure A4, with switch S1 closed and the resistance value of R1 and R2 equal, meter M1 has a current reading of 0.04 ampere. What will be the current readings on meter M2 and meter M3?

A. Meter M2 and meter M3 will both read 0.1 Ampere
C. Meter M2 and meter M3 will both read 0.04 Ampere
D. Meter M2 will read 0.02 Ampere and meter M3 will read 0.02 Ampere

19. In the circuit shown in Figure A4, suppose that meter M3 displays a higher curent reading than it should. Which of the following could cause this condition?
A. Resistor R1 is shorted
C. Resistor R2 is shorted
D. Switch S1 is open
MadoRock
#2 Jan 27 2009 02:31pm
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I do the exact same thing in my science class.But we're gonna learn how to find the R next class :S
ridman2000
#3 Jan 27 2009 02:34pm
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Quote (MadoRock @ Tue, Jan 27 2009, 03:31pm)
I do the exact same thing in my science class.But we're gonna learn how to find the R next class :S


well if you get good with these than share the love lol
Fateful
#4 Jan 27 2009 02:36pm
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when ur circuit is single(no parrallels)

do R1+R2+R3....=Rt(total resistance)

when u have parrallel circuit do

(1/R1) + (1/R2) + (1/R3) = (1/Rt) exp -1 and add it to the rest of the circuit
ridman2000
#5 Jan 27 2009 02:40pm
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Quote (XArt_Of_WarX @ Tue, Jan 27 2009, 03:36pm)
when ur circuit is single(no parrallels)

do R1+R2+R3....=Rt(total resistance)

when u have parrallel circuit do

(1/R1) + (1/R2) + (1/R3) = (1/Rt) exp -1 and add it to the rest of the circuit


haha, well thats definitly one explination i was searching for. im having the most trouble trying to figure how much voltage i have after resistors ect.
SweatingBullets
#6 Jan 27 2009 03:06pm
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i'll circuit your fix
ridman2000
#7 Jan 29 2009 03:27pm
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bump
donut426
#8 Jan 29 2009 05:38pm
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3 is a and c. The voltage only drops on the resistors. The total drop is 6 V and is largest when including the voltage before the resistors and after (kirkhoff's voltage law)
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