is there a site where i can see if my calculations ofmeasurements or resistors is correct. or where i can see other problems that deal with the tesing or reistors and there results

32,153 results
  1. Physics

    Thanks for any help :) Four 20 ohm resistors are connected in parallel and the combination is connected to a 20V emf device. The current is: A) 0.25A B) 1.0 A C) 4.0 A D) 5.0 A E) 100 E Parallel circuits: I know that the voltage is 20V and the Resistance

  2. Physics (URGENT)

    Three wire-wound resistors have the following values: 30 ohms, 80 ohms, and 100 ohms. Each resistor has a voltage rating of 100V. If these three resistors are connected in series, can they be connected to a 240V circuit without damage to the resistors?

  3. Probability and Statistics

    A package contains 12 resistors, 3 of which are defective. If four are selected, find the probability of getting the following. No defective resistors One defective resistors 3 defective resistors

  4. physics

    a 100 V DC signal is applied to four resistors as shown in Fig. 5. The values of the resistors are 20 ohm, 40 ohm, 60 ohm and 80 ohm. What is the voltage across the 40 ohm resistor?

  5. electrical year 2

    how do i answer this. A series RL circuit contains two resistors and two inductors.the resistors are 33 ohms and 47 ohms the inductors have inductive reactances of 60 ohms and 30 ohms. the applied voltage is 120 v. what is the voltage drop on the 33 ohm

  6. physics question

    A resistance box has the following components and tolerances: 10 resistors each of 100k§Ù ¡¾ 0.05% 10 resistors each of 10k§Ù ¡¾ 0.05% 10 resistors each of 1k§Ù ¡¾ 0.05% 10 resistors each of 100§Ù ¡¾ 0.1% 10 resistors each of 10§Ù ¡¾

  7. science

    A series RL circuit contains two resistors and two inductors. The resistors are 33 W and 47 W. The inductors have inductive reactances of 60 W and 30 W. Angle theta is _____.

  8. physics

    A series circuit is formed with a 10-V power supply and two resistors, where R1 = 6 ohms and R2 = 4 ohms. The current through the resistors is I1 and I2, respectively. What are the values of I1 and I2? I1 = I2 = 1.0 A I1 = I2 = 0.5 A I1 = 0.6 A; I2 = 0.4 A

  9. Electrical theory

    a series RL circuit contains two resistors and two inductors. the resistors are 33 ohms and 47 ohms. inductors have inductive reactances of 60 ohms and 30 ohms. the applied voltage is 120 volts. what is the voltage drop on the 33 ohm resistor?

  10. Jiskha

    The other day I was on this site and my sister saw me. She told me to never go on this site, and she was accused of cheating off of it before. I told her that cheating is prohibited on Jiskha(and that Jiskha doesn't give answers, it just helps), but she

  11. Series RL circuits

    A series RL circuit contains two resistors and two inductors. The resistors are 43 ? and 54 ?. The inductors have inductive reactances of 70 ? and 40 ?. The total impedance is _____.

  12. physics please check my answer

    Consider the following circuit that contains a battery and six identical resistors: The diagram has branch A with one resistor, connected to branch B with two resistors connected in parallel, and then branch B is connected to branch C with three resistors

  13. Physics ASAP!!

    1. Three resistors are placed in series. They have the following resistances: R1 = 20 ohms, R2 = 20 ohms, R3 = 10 ohms. What current would be moved through this circuit by a 5-V power supply? A. 1.0 A B. 0.10 A C. 25 A D. 250 A 2. Two resistors are placed

  14. Physics

    When a pair of identical resistors is connected in series which of the following is the same for both resistors: voltage across each, power dissipated in each, current through each? What about if the resistors are different from each other?

  15. Physics

    A plane traveling at 200.0 km/h attempts to land on a 250 m runway. The plane’s engines and brakes accelerate uniformly at –7.0 m/s2. Will the plane be able to land safely? Show all your work. Include any equations used, including the given and the

  16. Electrical theory

    A series RL circuit contains two resistors and two inductors. The resistors are 27 W and 47 W. The inductors have inductive reactances of 50 W and 40 W. The applied voltage is 120 V. What is the voltage drop on the inductor that has 40 W of reactance?

  17. science

    Ricardo finds an online site about the gas laws. The site shows the equation below for Charles’s law. What change would correct the error on the site?

  18. Physics

    Two resistors have resistances R1 and R2. When the resistors are connected in series to a 12.4-V battery, the current from the battery is 2.13 A. When the resistors are connected in parallel to the battery, the total current from the battery is 9.01 A.

  19. Physics

    A 9.00 V storage battery is connected to three resistors, 4.25 Ω, 11.0 Ω, and 21.0 Ω, respec-tively. The resistors are joined in series. Calculate the equivalent resistance can someone answer this please?

  20. THANK-YOU

    i'd like to thank all the homework helpers on this site for helping everyone, and I'd like to say thanks to this site for not having us to have a login id to post a question, because I don't have an email. Thank alot, this site is really useful.

  21. PHYSICS 2

    Two resistors have resistances R(smaller) and R(larger), where R(smaller) < R(larger). When the resistors are connected in series to a 12.0-V battery, the current from the battery is 1.99 A. When the resistors are connected in parallel to the battery, the

  22. physics

    A 10.8 kg block of metal is suspended from a scale and immersed in water, as in the figure below. The dimensions of the block are 12.0 cm 10.4 cm 10.4 cm. The 12.0 cm dimension is vertical, and the top of the block is 5.00 cm below the surface of the

  23. physical science

    A learner asked the following question: What happens to the current in a circuit if the resistors are connected in parallel? she then proceeds to the investigate her question using four identical resistors. a) write down an appropriate hypothesis for her

  24. physics

    three resistors with values R1,R2 and R3, respectively are connected in series to a 6-v battery.the total current flowing through the circuit is I=0.6mA.when these three resistors are connected in parallel to a 6v battery,the total current is I=6.2mA. also

  25. Physics

    1)Several resistors are connected in parallel. If a battery provides constant voltage in this circuit the addition of another resistor in parallel a)increases current through each resistor b)decreases current through each resistor c)doesn't affect the

  26. Physics

    How does current change for resistors in series? What is the equivalent resistance for resistors in series?

  27. Math

    A certain computer can perform 10^5 calculations per second. How many calculations can it perform ins 10 seconds? My answer: 10^5=100,000 Multiply by 10=10^6=1,000,000 Am I correct? Thank you

  28. Physics

    Two identical resistors are connected in parallel across a 26-V battery, which supplies them with a total power of 9.8 W. While the battery is still connected, one of the resistors is heated so that its resistance doubles. The resistance of the other

  29. physics

    five resistors of 30 ohms each are connected in parallel across a 120 volt line. the combined resistance of the five resistors is ___ ohms. The total current in the circuit is ___ amperes. The current in each branch is ___ amperes. How do I set these up:?

  30. PHYSICS

    a battery of three cells in series each of emf 3volt an internal resistances of 0.5 ohms is connected to 2 ohms resistors in series with a parallel combination of 2,3, ohms resistor [1] draw the digram and calculate [a] effective [b] the I in circuit [c]

  31. physics (please help)

    Four 20 ohm resistors are connected in parallel and the combination is connected to a 20 V emf device. The current in any one of the resistors is: A) 0.25 A B) 1.0 A C) 4.0 A D) 5.0 A E) 100 A I get B V=IR I= 20V/20 ohms = 1 A for any one of the resistors

  32. Physics

    Three batteries and four resistors are connected in a circuit as shown in the figure below. (Let emf1=70.0V, emf2=455.0V, and emf3=212.0V. Due to the nature of this problem, do not use rounded intermediate values in your calculations (a) What is the

  33. Physics-Please help

    I need a little direction with this question:If someone could provide the correct formula, I think I divide each reistor by 12V but I'm not sure. To find total resistance, do I just add the reciprocals? Three resistors connected in parallel have individual

  34. physics: Electricity/Resistance

    If I have a 9V circuit, with: 2 resistors in parallel; followed by: 2 single resistors in series; and I calculate the effective R of the parallel pair (using 1/R=1/R1+1/R2); can i then add this value to the series resistors to get a total for the circuit?

  35. Physics

    A 9.00 V storage battery is connected to three resistors, 4.25 Ω, 11.0 Ω, and 21.0 Ω, respec-tively. The resistors are joined in series. Calculate the equivalent resistance.

  36. physics

    Three identical resistors are connected in series to a battery. The voltage drop across one of the resistors is ___ times the voltage of the source.

  37. Physics

    You are given five identical resistors each of resistance r. How can you arrange all these resistors (in series, in parallel, or both) in order to have an equivalent resistance of 7r/2, 7r/3 or 2r

  38. Physics

    You are given five identical resistors each of resistance r How can you arrange all these resistors (in series in parallel or both) in order to have an equivalent resistance of 7r/2, 7r/3, or 2r?

  39. Physics

    Let n represent the number of similar resistors in a circuit. Each resistor has a resistance of r. When the resistors are connected in parallel the circuit has a total resistance of R. What would the total resistance of the circuit be if the resistors were

  40. physics

    A 6volt battery of internal resistance 0.5ohm is connected to three resistors of value, 3ohm, 4ohm, and 5ohm. Calculate the current in each resistor, but the 4 and 5ohm resistors arein parallel.

  41. physics (please check)

    Four 20-ohm resistors are connected in series and the combination is connected to a 20 V emf device. The current in any one of the resistors is: A) .25 A B) 1.0 A c) 4.0 A D) 5.0 A E) 100 A My answer: A R= 20 + 20 + 20 + 20 =80 V= IR 20/80=I I=.25 A

  42. circuits

    Consider a circuit made of 2 resistors wired in parallel. If the same two resistors were wired in series, the total resistance of the circuit would ____________. * a. increase b. decrease c. stay the same d. You cannot compare the resistances, since no

  43. Math~Polynomials

    5)Find the degree of -5w-4w^2+7w+16(1point) -5 16 14*** 3 Ok I put stars next to my answer though I'm not sure if I'm correct.. or not so Steve could you tell me if my calculations are way off or if they are correct?....

  44. electrical Circuit

    You have several 36 ohm resistors and a 12 Volt battery. d. When you connect one resistor to the battery, what is the current of the circuit? e. When you wire two resistors in series to the battery, what is the current of the circuit? f. When you wire two

  45. Chemistry

    Did I do these right? Can someone let me know if I did them correctly? I had someone help me with the problems but know I want to make sure their the right answers? 1. Methane burns in oxygen according to the following equation: CH4 + 2O2 ----> CO2 + 2H2O

  46. Physics

    Three resistors are connected in series across a battery. The value of each resistance and its maximum power rating are as follows: 7.1Ω and 20.9 W, 29.5Ω and 11.4 W, and 13.6Ω and 12.5 W. (a) What is the greatest voltage that the battery can have

  47. physics

    We are given an input current Iin=100μA and a linear resistive load represented by the resistor RL . Our resistive load is not regulated for the high current provided by our current source, so we add a resistor RS in parallel to divide the current such

  48. Physics repost

    Four resistors of 10.0 each are connected in parallel. A combination of four resistors of 10.0 each is connected in series along with the parallel arrangement. What is the equivalent resistance of the circuit? A)80.0 B)40.4 C)40.0 D)42.5 This is all I

  49. Physics

    For what combination of parallel and series resistors will resistors of 25 ohms, 100 ohms, 50 ohms, and 50 ohms have a total resistance of 62.5 ohms?

  50. College Physics

    Two 9.1 ohms resistors are connected in parallel, as are two 5.9 ohms resistors. These two combinations are then connected in series in a circuit with a 20 V battery. What is the current in each resistor? I9.1, I5.9 = A What is the voltage across each

  51. College physcs

    Two 9.1 ohms resistors are connected in parallel, as are two 5.9 ohms resistors. These two combinations are then connected in series in a circuit with a 20 V battery. What is the current in each resistor? I9.1, I5.9 = A What is the voltage across each

  52. English

    Create a Topic Sentence where the blank space is. __________________________________________________________________. The goal of the Web Privacy Project is to make it simple for users to learn the privacy practices of a Web site and thereby decide whether

  53. circuits

    Consider a DC circuit that consists of a 6V battery and 3 resistors (R1, R2, and R3). Resistors R1 and R1 are wired in parallel, with resistances of 2, and 4 ohms, respectively. R3 is a 6 ohm resistor that is wired in parallel with a light bulb (B) that

  54. physics

    is there a site where i can see if my calculations ofmeasurements or resistors is correct. or where i can see other problems that deal with the tesing or reistors and there results

  55. physics

    Four 20 ohm resistors are connected in series and the combination is connected to a 20V emf device. The potential difference across any one of the resistors is: A) 1 V B) 4 V C) 5 V D) 20V E) 80 V So there are four resistors that are 20 ohms. Their

  56. Physics

    You have two identical resistors 50kohm each and a 1.5V battery. Which of the following statements are true a)the current drawn is bigger if the resistors are in series b) the current drawn is bigger if the resistors are in parallel c)the voltage across

  57. Probability and Statistics

    A package contains 12 resistors, 3 of which are defective. If four are selected, find the probability of getting the following. No defective resistors One defective resistors 3 defective resistors

  58. Physics

    use two 100-ohm resistors, two 20-ohm resistors and two 47-ohm resistors in any combination to get any of these currents...... a) I=0.015 A b) I=0.031 A c) I=0.064 A d) I=0.6 A

  59. physics

    At a construction site, a brick fell and hit the ground at 24m/s a) from what height did the brick fall? b) how long was it falling? for a) i got 29.387m and for b) I got 2.448s I got a) by using v^2=v0^2 +2a(x-x0) for b) I used v=v0+at Did I do this

  60. circuits

    A string of five series resistors is connected across a 20 v battery. Zero volts are measured across all the resistors except the second one. What can be wrong with this circuit?

  61. Physics

    A series combination of two resistors of resistance 12 Ù and 8 Ù is connected across a source of emf 24 V. What is the potential difference across 8 Ù resistors? Do you know the formula for this?

  62. Physics (Please help!)

    Three resistors of different values can be connected together in different configurations. If all three resistors are used in a circuit, how many different values of total resistance can be produced? I can only find five... but the answer key says eight.

  63. Science (Physics)

    Two resistors 3ohms and 6ohms are connected in parallel across a 6V battery, what is the current flow through the 3ohms resistors? Just the formula please.

  64. electricity

    A series RL circuit contains two resistors.The resistors are 60ohm and 30ohm.when calculating the circuit values, what is the total resistance?

  65. physics

    If three identical resistors are connected in series to a battery, the resistance of the combination will be ___ times the resistance of any one of the resistors.

  66. Physics. Easy question? Please help

    What is the (a) maximum and (b) minimum total resistance value that can be obtained using three resistors whose values are 2.0 ohms, 4.0ohms and 6.0 ohms? The resistors can be used individually, in pairs, or all three at once. Is this a trick question? Is

  67. Physics

    starting with the equation for resistors in parallel, prove that for two resistors R1 and R2, the equivalent total resistance (RT) is: Rt=R1R2/R1+R2 I kind of understand it, but it isn't giving me the right answer which should be the equation?

  68. physics

    Four resistors are connected to a battery with a terminal voltage of 18.0 V. The resistors are, R1=61, R2=34, R3=90, and R4=11. R1 & R2 are in series, and combined are in parallel with R3, & the combination of R1, R2, & R3 are in series with R4. Find the

  69. homework help site w/ all subjects?

    does any one know of any other homework help site where people can draw stuff and explain things, the site covers all subjects, but i forget wat the site is, and i dotnt want a paying site like stupid tutor vista..

  70. Physics

    A heating instrument has 12 resistors and they are placed vertically and have a uniform reducing Power.The powers of the first, second, third and fourth resistors are 3000,2600,2200 and 1800 respectively.Find the power of the resistor?

  71. ET1210-Dc/Ac Circuits

    if a certain number of equal resistors are wired in series across a certain voltage source, determine how much voltage is across each resistors.

  72. College Physics

    You have 20 and 80 (unit is the upside down U) resistors in a circuit with a 100 V battery. A)These resistors are parallel. Find the current through each resistor and the voltage drop across each resistor. B) These resistors are connected in series. Find

  73. Physics

    A certain number of identical resistors are connected in series and their total resistance is measured. When the resistors are disconnected and re-connected in parallel, their total resistance drops to one-percent of the value measured when they were

  74. Math check my answer

    What music plan is a better deal? site A: $29 per month plus .80 cents per download site B: $17 per month plus $1.19 per download write an equation and show how many downloads make site A a better deal. My answer:: .80x + 29 > 1.19x + 17 after all my other

  75. Physics

    A heating instrument has 12 resistors and they are placed vertically and they have uniform reducing power.The power of the first, second,third and fourth resistors are 300ohms,260ohms,220ohms and 180ohms respectively.Find the power of the resistor?

  76. Physics

    Three resistors 2.5 Ù, 3.5 Ù and 4 Ù are connected in parallel. What is the equivalent resistance? I know you must use 1/Req = 1/R1 + 1/R2 + 1/R3 But then I get .935 and I don't think that's correct. What am I missing? Thanks

  77. physics

    the effective resistacce of two resistors connected in series is 100 ohm.when it connected in parallel it is 24 ohm.determine the values of two resistors

  78. Physics

    Two resistors, 34.8 and 84.1Ω, are connected in parallel. The current through the 84.1-Ω resistor is 2.47A. (a) Determine the current in the other resistor. (b) What is the total power supplied to the two resistors?

  79. physicsc

    Two 7.4 resistors are connected in parallel, as are two 4.9 resistors. These two combinations are then connected in series in a circuit with a 11 battery. What is the current in each resistor? What is the voltage across each resistor?

  80. physics

    A circuit is powered by a 5 V battery and has 0.2 A of current through it. If the circuit contains two resistors connected in series and one of the resistors has a resistance of 5 Ω, what is the resistance of the other resistor?

  81. physics

    Two resistors, 68.0 Ω and 74.0 Ω, are connected in parallel. The current through the second resistor is 4.60 A. (a) Determine the current in the first resistor? (b) What is the total power supplied to the two resistors?

  82. chemistry!

    i lost my notes for Stoichiometry and have a final tomorrow. ASAP would be appreciated. im trying to find a site that can help me with balancing word equations calculations:mol,g,liters-gas and determining limiting reagent and % yields. please please

  83. Physics

    I am having some problems trying to figure this out. Series circuits I have a "d" battery, a battery holder, 3 different resistors, and a multimeter. How do I put the resistors into a series cicuit? And when I use the multimeter, does it need to be set on

  84. Algebra-Please check my calculations

    Could you please check my answers and help with the ones I can't figure out- 1. Solution to the radical function sqrt(1/2x+1) = 1 is x = 0 True or False I think it is true according to my calculations 2.Solve x = sqrt(8x) 8x = x^2 x^2 - 8x = 0 x(x-8) = 0 x

  85. Algebra

    Could you please check my answers and help with the ones I can't figure out- 1. Solution to the radical function sqrt(12x+1) = 1 is x = 0 True or False I think it is true according to my calculations 2.Solve x = sqrt(8x) 8x = x^2 x^2 - 8x = 0 x(x-8) = 0 x

  86. pHYSICS

    Two resistors have resistances R(smaller) and R(larger), where R(smaller) < R(larger). When the resistors are connected in series to a 12.0-V battery, the current from the battery is 1.99 A. When the resistors are connected in parallel to the battery, the

  87. Dr. Bob?/chemistry help

    i have a final tomorrow and im allowed to have notes. however i lost my notes on stoichiometry. can someone give me a site that will help with balancing equations, performing calculations: mol, g, liters/gas and reagent/% yields?

  88. question

    Which sentence has a preposition-related error? 1.There was a fight between the two men. 2.The Cerritos Center is near to my office. 3.They gave a party for Mary and me. 4.The report was sent to everyone except her. One of those sentences has TWO

  89. Socials

    could someone please give me a site from which I can start to memorize ALL this socials stuff, like the renaissance, black death,etc. I don't want a site which inlcudes reading in it I would like to have a site with pictures bubbles included, please HELP

  90. Physics

    Two resistors, 46.0 and 64.0 , are connected in parallel. The current through the 64.0 resistor is 3.40 A. (a) Determine the current in the other resistor. _________ A (b) What is the total power consumed by the two resistors? _________ W Please help!!!!!

  91. Physics-HELP

    Two resistors, 80.0 and 66.0 , are connected in parallel. The current through the second resistor is 2.40 A. What is the current in the first resistor? What is the total power supplied to the two resistors? I got the answer for the first question but i

  92. physics/electrical circuits

    five resistors each has a resistance R ohms and are connected in parallel. if the equivalent resistance is 20 ohms. find the ohmic resistance of each resistors.

  93. math

    You operate a gaming Web site, where users must pay a small fee to log on. When you charged $4 the demand was 510 log-ons per month. When you lowered the price to $3.50, the demand increased to 765 log-ons per month. (a) Construct a linear demand function

  94. science

    build a circuit containing two resistors that are in series with each other. This circuit also contains two light bulbs that are in parallel to each other, but are in series to the resistors. Connected this to two batteries that are in series with each

  95. Physics

    1)Several resistors are connected in series. If a battery provides constant voltage in this circuit the addition of another resistor in series a)increases current through each resistor b)decreases current through each resistor c)doesn't affect the current

  96. homework help site

    I used a site last year where you get an account and can ask questions on an online forum from like 5 to 9 everyweeknight. All that i remember is that it was like (four random letters). org/com. Also it was a site for Canadians. Like Canadian Homework

  97. Electricity

    In a series circuit, there are 4 resistor with one battery cell. (there's no diagram for this question) The battery cell = 100v r1 = 3kΩ r2 = 4kΩ r3 = 1kΩ, P=100mW r4 = ? find the following quantities: 1) the circuit currents 2)the total resistance of

  98. Vague Physics

    Does anyone know what the laws of conservation are when dealing with resistors? Well, I guess you can vaguely state if you have, for example, 2 resistors in series: then, in accordance with the law of conservation of energy, the voltage drop across each

  99. Chemistry

    How can calculations affect the accuracy and precision of experimental results? Calculations, such as division and addition, can decrease precision in data by generating more digits that can be significant. Nonzero digits are always significant; however,

  100. nutrition and wellness

    how do you tell if a site is personal site or not? because for the 5 site's i'm using for my research paper (listed in an earlier post by Ms.Sue) i need to know if they are personal sites, yes, no , or uncertain it says to look in the url, but i'm still

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