current passing through a conductor is increased from 10 A to 15 A this decreases the strength of the magnetic field produced by the conductor true or false True

14,682 results
  1. electromagnatic

    a) Find the force on a straight conductor of length 0.30m carrying a current of 5.0A in the direction, where the field is T. i. b) A conductor of length 2.5m located at z=0, x=4m carries a current of 12.0A in direction. Find the uniform in the region if

  2. Physics

    a current of 3 amp is passing through a galvanometer if a high rasistance is connected in series to it the total current that will pass through the resistance will be? Ans 15 amp

  3. Algebra 1

    What is the end behavior of the graph of f(x) = -0.25x^2 - 2x + 1? A) As x increases, f(x) increases. As x decreases, f(x) decreases. *** B) As x increases, f(x) decreases. As x decreases, f(x) decreases. C) As x increases, f(x) increases. As x decreases,

  4. Physics

    The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of 4.50 A. The radius of cross-section A1 is 0.300 cm. (a)What is the magnitude of the current density across A1? A: 1.59155e2 using J=I/((r^2)pi) (b)

  5. algebra

    the current in an electrical conductor varies inversely as the resistance of the conductor. If the current is 12 ampere when the resistance is 240 ohms, what is the current when the resistance is 540 ohms

  6. Circuits2

    An alternating current and a direct current flows simultaneously in the same conductor. if the effective value of the alternating current is 5A and the direct current is 10 A, what will an AC ammeter read when connected in the circuit?

  7. Basic electrical engineering

    The average velocity of the electrons in a conductor carrying a current of 65.5 amp is 0.0153 inches per sec.what is the cross-sectional area of the conductor.

  8. Chem

    Consider the exothermic reaction CoCl42-(aq) + 6 H2O(l) --> Co(H2O)62+(aq) + 4 Cl -(aq). Will the equilibrium concentration of CoCl42- increase or decrease when the following changes occur? (a) HCl is added. increases decreases .(b) Co(NO3)2 is added.

  9. Physics

    1)The polarity of an electromagnet can be determined using the second right-hand rule. true. 2)Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor. false.

  10. Physics

    Which of the following statements about Ohm’s Law is true? A. Keeping the same voltage and decreasing resistance decreases the current. B. To increase the current, decrease the resistance. C. Ohm’s law relates power, current and resistance. D.

  11. jake

    Suppose that you're facing a straight current-carrying conductor, and the current is flowing toward you. The lines of magnetic force at any point in the magnetic field will act in [A. a counterclockwise direction.] B. a clockwise direction. C. the

  12. physics

    Using the Biot-Savart law, calculate the magnetic field (at P) produced by a straight current-carrying conductor of length alphafrom on the x-axis. What would the magnitude be of the magnetic field if P was very close to the conductor? P would be a

  13. physics

    A current-carrying conductor experiences a force upward in a magnetic field that acts perpendicularly to and out of the plane of the paper. What is direction of the current in the conductor? Choose one answer. a. The current in the conductor is toward

  14. algebra

    The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 50 amps when the resistances is 20 ohms. What is the current when the resistance is 60 ohms?

  15. Physics

    A long coaxial cable consists of two concentric conductors. The inner conductor is a cylinder with radius R1, and it carries a current I0 uniformly distributed over its cross section. The outer conductor is a cylindrical shell with inner radius R2 and

  16. Physics

    A capacitor of capacitance C= 10mF, is charged using a battery of potential V, through a resistor of resistance R = 250 ohms. the charge of the capacitor is given by Q(t)=CV[1− e ^ (−t/RC)] Find an expression for the current passing through the

  17. physics HELP

    Consider a coaxial cable with 2Amps in the center conductor coming out of the page, and 1Amp in the outer conductor going into the page. The center conductor has a radius of 1mm, the outer conductor's inner radius is 2mm, and the outer conductor's outter

  18. physics

    Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor. True The direction of the force on doubly ionized helium atoms (alpha particles) moving at right angles to a

  19. Physics

    A conductor of length 2m carrying a 1.5A current experiences a force of 2.2 N. What is the magnitude of the magnetic field that acts perpendicular to the flow of current in the conductor? 0.73 Tesla 6.60 Tesla 0.34 Tesla 0.61 Tesla

  20. Physics -work shown

    A heavy conductor (mass m, length `, resistance R) is suspended by two springs each with spring constant k, and connected to a battery with electric potential V as shown in the figure. A magnetic field ~B is now imposed. The acceleration of gravity is 9.8

  21. Physical sciences

    1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction 2 waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3

  22. science

    Which option most accurately defines Faraday’s law? A.Any change in the electric field over a conductor will produce an magnetic field inside a conductor. B.The voltage generated in a coil is inversely proportional to the number of electrons in the loop.

  23. Physical Science

    ok so i keep getting one wrong on a 4 question test and failing so can someone tell me what im getting wrong 1. What causes an electric current in a wire? A. Electric fields cause atoms to move in the wire. B. Electrons flow because of electrical

  24. Physics

    current passing through a conductor is increased from 10 A to 15 A this decreases the strength of the magnetic field produced by the conductor true or false True

  25. nwfsc

    In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 20 A (amperes), the resistance is 7 ohms. What is the resistance when the current is 14 A ?

  26. physics

    A coaxial cable has an inside conductor of radius 'a' carrying a current 'I'.The current returns as a uniform current through the outside conductor with a inside radius 'b' and outside radius 'c'.What is the magnetic field at a distance 'r' from the

  27. ALG WORD PROBLEM

    The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 9 amperes when the resistance is 940 ohms. What is the current when the resistance is 580 ohms? Thank you yet again. Almost through with this

  28. Physics

    A conductor of length 2m carrying a 1.5A current experiences a force of 2.2 N. What is the magnitude of the magnetic field that acts perpendicular to the flow of current in the conductor? 0.73 Tesla 6.60 Tesla 0.34 Tesla 0.61 Tesla

  29. Physic ~ pls help

    A heavy conductor (mass m, length `, resistance R) is suspended by two springs each with spring constant k, and connected to a battery with electric potential V as shown in the figure. A magnetic field ~B is now imposed. The acceleration of gravity is 9.8

  30. physics

    A cylindrical conductor of radius carries a uniformly distributed current I. Show that the magnetic field within the conductor measured at a distance r from the center is given by the following equation... B= (u0Ir)/2pi a^2

  31. Electricity

    when an electric current flows through a long conductor, each free electron moves? A)from one end of the conductor to the other end. B)with a speed of 300,000,000 m/s. C)back and forth between the ends of the conductor. D)through a relatively short

  32. physics

    A variable capacitor is connected to an ac source. what effect does decreasing the capacitance have on the reactance and current in this circuit? Reactance Current A) increases decreases b) decreases no change c) decreases increases d) increases increases

  33. physics

    A conductor of length 0.8 m carrying a current of 2.5 A is kept in a magnetic field of 0.6 Tesla. What is the magnitude of the force experienced by the conductor if it is inclined at an angle 30° to the direction of the magnetic field? Choose one answer.

  34. electricity

    When all parts of a circuit are composed of conducting materials, the circuit is said to be? closed? Complete? Better than the alternative? when an electric current flows through along conductor, each free electron moves: when an electric current flows

  35. physics

    Two straight conductors are 15 cm apart. If one conductor has a current of 12 A and the other has a current of 18 A, calculate the magnetic field at a point midway between the two conductors. The current in both conductors is flowing in the same direction.

  36. physics

    A 0.2 kg conductor of length 0.8 m carries 2 ampere current to the right in a magnetic field. What is the magnitude and the direction of the magnetic field acting on the conductor if the net force on the rod is zero? (Assume that the rod is hung by two

  37. physics

    according to Lenz's law, the magnetic field of an induced current in a conductor will a. enhance the applied field b. heat the conductor c. increase the potential difference d. oppose a change in the applied magnetic field i think D

  38. Chemistry

    The reaction, 2 SO3(g) == 2 SO2(g) + O2(g) is endothermic. Predict what will happen if the temperature is increased. A. the pressure decreases B. more SO3(g) is produced C. Kc increases D. Kc decreases E. none of the above I chose that Kc will increase.

  39. science past year

    1.1. A resitance of 1.5ohm is connected in parallel with a resistance of 3 ohm. This combination is connected in series with a resistance of unknown resistance of value R. The circuit is then connected acress a 10 V supply. Calculate: 1.1.1. The value of

  40. physics

    Why does a conductor carrying current experiences force when held in a magnetic field at right angles to it?

  41. Physics

    The polarity of an electromagnetic can be determined using the second right-hand rule. A. True B. False Is it false? Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the

  42. physics

    please help with either or both 1. a charge of 10C is passing in 2 second through a cross sectional area of a conductor. calculate the intensity of magnetic field at a distance of 10 cm from the conductor. 2. An amount of 3X10^20 electrons is passing in a

  43. Physics

    The polarity of an electromagnet can be determined using the second right-hand rule. A. True B. False Is it B? Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor.

  44. Physics

    A current-carrying conductor of length 0.8 m is placed perpendicular to the direction of the magnetic field of 0.6 Tesla. What is the value of the current in the conductor if the conductor experiences a force of 1.2 N?

  45. physics

    a conductor is 2m long and 8mm diameter if its resistivity is 1.8*10^-8 ohmm calculate a,the resistance of the conductor b,the current in the conductor when a p.d of 10v is maintained across its ends c,the current density d,the electric field in the wire

  46. Physics

    A coaxial transmission line has a solid inner conductor of radius a and a thin-walled outer conductor of radius b. The medium between the conductors has permeability (Mu)0. Find the inductance per meter of length of the line (a) if all current of the inner

  47. math

    In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 2A (amperes), the resistance is 115ohms. What is the resistance when the current is 5A ?

  48. math

    In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 2A (amperes), the resistance is 115ohms. What is the resistance when the current is 5A ?

  49. math

    In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 2A (amperes), the resistance is 115ohms. What is the resistance when the current is 5A ?

  50. beginning algebra

    In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 8A (amperes), the resistance is 15 ohms. What is the current when the resistance is 4 ohms?

  51. Physics

    In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 8A (amperes), the resistance is 15 ohms. What is the current when the resistance is 4 ohms?

  52. Algebra

    in an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 5A, the resistance is 20 ohms. What is the current when the resistance is 25 OHMs?

  53. Physics

    The graph below represents the relatonship between the potential difference across a metal conductor and the current through the conductor at constant temperature. Potential Difference vs. Current PD vs. C PD C 2 2 4 4 6 6 8 8 What is the resistance of the

  54. Physics

    The graph below represents the relatonship between the potential difference across a metal conductor and the current through the conductor at constant temperature. Potential Difference vs. Current PD vs. C PD---C 2----2 4----4 6----6 8----8 What is the

  55. Physics

    A conductor of length 2m carrying a 1.5A current experiences a force of 2.2 N. What is the magnitude of the magnetic field that acts perpendicular to the flow of current in the conductor?

  56. Physics

    A conductor of length 2m carrying a 1.5A current experiences a force of 2.2 N. What is the magnitude of the magnetic field that acts perpendicular to the flow of current in the conductor?

  57. Science (Physics)

    A conductor carries a current of 25 A and is at right angles to a magnetic field. The flux density is 0.8 Tesla and the length of the conductor in the field is 35 cm. Calculate the force acting on the conductor, and the value of the force if the conductor

  58. math

    The current I in an electrical conductor varies inversely as the resistance r of the conductor. The current is 6 amperes when the resistance is 920 0hms , what is the current when the resistance is 560 ohms

  59. Physics (electricity and Magnetism)

    A long straight and thin wire has a charge Q per unit length. It is also carrying a current I. A point charge is moving with a velocity v parallel to the conductor, at a distance d from it. Find the velocity v, supposing a correct direction for the current

  60. physics

    A coaxial cable has an inside conductor of radius 'a' carrying a current 'I'.The current returns as a uniform current through the outside conductor with a inside radius 'b' and outside radius 'c'.What is the magnetic field at a distance 'r' from the

  61. Physics

    A straight conductor between points O and P has a mass of 0.54 kg and a length of 1.5 m and carries a current of 12 A (see figure below). It is hinged at O and is placed in a plane perpendicular to a magnetic field of 3.4 T. If the conductor begins from

  62. physics

    pleae check How is current affected if the time interval over which the charge passes through a given area decreases while the amount of charge remains the same? a. the current increases b. the current decreases c. the current initially increases and then

  63. algebra

    The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 6 amperes when resistance is 940 ohms. What is the current when the resistance is 550 ohms?

  64. math

    The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 2 amperes when the resistance is 940 ohms. What is the current when the resistance is 540 ohms/

  65. Math

    The current in an electrical conductor varies inversely as the resistance of the conductor. If the current is 12 amperes when the resistance is 240 ohms, what is the current when the resistance is 540 ohms?

  66. Physics

    A conductor of length 2m carrying a 1.5A current experiences a force of 2.2 N. What is the magnitude of the magnetic field that acts perpendicular to the flow of current in the conductor? 0.73 Tesla 6.60 Tesla 0.34 Tesla 0.61 Tesla

  67. physics

    A long, cylindrical conductor of radius R carries a current I as shown in the figure below. The current density J, however, is not uniform over the cross-section of the conductor but is a function of the radius according to J = 6br^4, where b is a

  68. math

    the current I in an electrical conductor varies inversely as the resistance R of the conductor . the current is 4 amps when the resistance is 280 ohms . what is the current when the resistance is 40 ohms ?

  69. physics 30

    A current-carrying conductor that is 8.00x10^-2 m long is placed perpendicular to a magnetic field that has a strength of 6.00x10^-3 T. During a 3.00s time interval, 7.50x10^19 electrons pass a point in the conductor. The magnitude of the average magnetic

  70. Math

    The avearage velocity of the electrons in a conductor carrying a current of 65.5 ampere is 0.0153 inches per second. What is the cross sectional area of the conductor?

  71. physics

    The primary coil of a transformer is connected to a standard wall socket. A resistance R is connected across the secondary coil. The resistance across the secondary coil is increased. What happens to the current in the primary coil, and what happens to the

  72. Chem

    K so this time it is basic concept and I am suppose to guess what happens, so I've written the cause but I have also written my answer to the reaction and effect. so for: A + B C stress: A is increased reaction: forward effect:[A]increased [B] inc [C]inc

  73. Physics

    A conductor of length 5m carrying a current of 15A is placed in a uniform magnetic field of flux density 0 25T. If the conductor is placed at 60° to the field then the force on it is? The answer i got is 10

  74. physcial science

    Which of the following statements about Ohm’s Law is true? A. Increasing the voltage decreases current. B. Keeping the same voltage and decreasing resistance decreases the current. C. Ohm’s law relates power, current and resistance. D. To increase the

  75. physics

    Two parallel straight conductors 5 m long and 12 cm apart are to have equal currents. The force each conductor experiences from the other is not to exceed 2x10^-2 N. What is the maximum possible current in each conductor? I'm getting a ridiculous answer of

  76. physics

    A variable capacitor is connected to an ac source. what effect does decreasing the capacitance have on the reactance and current in this circuit? Reactance Current A) increases decreases b) decreases no change c) decreases increases d) increases increases

  77. Physical sciences

    1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3

  78. Physical sciences

    1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3

  79. Physical sciences

    1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction 2 waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3

  80. Physics

    Please help me! 1)1. Two charged point bodies are placed into the opposite on diagonal vertices of a rectangular with sides of 6 and 8 cm in vacuum – Q1=3.2x10-11 C; Q2=-4.267x10-11 C. Calculate the electric field intensity at two other vertices of the

  81. physics

    Do electrons (as a charge) really flow in a conductor or only energy is transfered through waves? Suppose a metal,copper is taken as a conductor, now when electrons from the metal towards the negative terminal of the battery, the conductor should get

  82. Physical Science

    Hello, I wanted to know if I had the correct answer? Thank You My answer:length, speed The magnitude of the voltage induced in a conductor moving through a stationary magnetic field depends on the____ and the___ of the conductor. length, speed distance

  83. physics

    what are some ways to transfer the motion of electric charge through a conductor? confused please help I am confused by the question. Electrons are moving because of thermal energy all the time in a conductor. To get them to drift in one direction mainly,

  84. physics

    Consider a coaxial cable with 2Amps in the center conductor coming out of the page, and 1Amp in the outer conductor going into the page. The center conductor has a radius of 1mm, the outer conductor's inner radius is 2mm, and the outer conductor's outter

  85. physics

    Consider a coaxial cable with 2Amps in the center conductor coming out of the page, and 1Amp in the outer conductor going into the page. The center conductor has a radius of 1mm, the outer conductor's inner radius is 2mm, and the outer conductor's outter

  86. physics

    Consider a coaxial cable with 2Amps in the center conductor coming out of the page, and 1Amp in the outer conductor going into the page. The center conductor has a radius of 1mm, the outer conductor's inner radius is 2mm, and the outer conductor's outter

  87. Electricity

    suppose that you're facing a straight current carrying conductor, and the current is following toward you.the lines of magnetic force at any point in the magnetic field will act in? A)the same direction as the current. B)a clockwise direction. C)the

  88. physics

    A straight copper conductor is held parallel to the axis of a freely suspended magnetic needle such that the conductor is under the needle and the current is flowing from south to north. In which direction the north of magnetic needle will move?

  89. Physics

    Some stoves use the heat produced by current flowing through a conductor. If the heating element (conductor) has a resistance of 30 ohms, how long will the burner have to work to heat 500 g of 30°C water up to its boiling point? The specific heat of water

  90. Chemistry

    All of the following apply to the reaction A(g)+B(g)C(g) as it is carried out at constant temperature in a rigid container EXCEPT: A)The total pressure decreases B)The rate of reaction decreases C)The entropy of the system decreases D)The number of

  91. science

    when whould electric current flow through a conductor

  92. physics

    What is the value of current when charge of 5 uc paases through a conductor in 2seconds

  93. PHYSICS

    Determining how the charges distribute on the surface of a conductor is, in general, a very difficult problem. We know that if we charge a conductor the charges go to the surface and redistribute so that the electric field in the conductor vanishes. One of

  94. Physics

    Suppose that the concentration of electrons in n-type Ge at room temperature decreases linearly from 5 x 10^16/cm^3 to zero over an interval of 2mm. a) Calculate the diffusion current b) What is the value of the electric field required to produce a drift

  95. math

    if all sides of a cube are reduced by 1/2, how does it affect volume? a. decreases 200% b. decreases 400% c. decreases 800% d. decreases 600% answer b

  96. physics

    A rectilinear homogeneous conductor OA of mass 12 g and of length 36cm hangs freely from its upper end O while its lower end A slightly touches the surface of the mercury. Terminals C and D are connected to a generator which supplies a current 7.4A. A

  97. science

    How can circuit voltage affect the choice of insulator? why does the resistance decreases as the conductor diameter increases? how does temperature effect resistance? please help and thank you

  98. Physics

    Scroll all the way to the bottom in the link I'll provide below and there will be diagrams for which my questions/answers are based on. I'm having trouble applying the "right hand rule" to 1. c) Also, for 1.a) I think the magnetic field lines should go

  99. physics

    What is the average current through a conductor that carries 4 375C during a 2 min time period?

  100. College Physics

    Current passes through a solution of sodium chloride. In 1.00 second, 2.68 x 10^16 Na+ ions arrive at the negative electrode and 3.92 x 10^16 Cl-ions arrive at the positive electrode. What is the current passing between the electrodes? Current = mA What is

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