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1. A coil having :N= 440 turns diameter =1,2mm Mean length= 120mm Inductance= 400micro Henry's Calculate the resistance is the
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2. How does changing the electric current in an electromagnet affect the magnetic force generated?Increasing electrical current
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3. Use the table of observations about the electric force between charged objects to answer the question. Charge of Object 1 (C)
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4. A teacher places a metal can on top of an insulating foam cup and touches the side of the cup with a negatively charged rod.
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5. Two negatively charged objects exert a force on each other. Describe the force between the objects, and describe two ways to
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6. Use the table of observations about the electric force between charged objects to answer the question. Charge of Object 1 (C)
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7. (a) Two point charges totaling 7.00 µC exert a repulsive force of 0.250 N on one another when separated by 0.586 m. What is the
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8. The electric force between stationary charged bodies is called the
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9. Three charges are located at the vertices of a triangle, as shown.An isosceles triangle lying on its side. The two charges at
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10. A charge of 8.5 × 10–6 C is in an electric field that has a strength of 3.2 × 105 N/C. What is the electric force acting on
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11. A coil is wound with 1200 turns of copper wire that has a cross-sectional area of 2,5mm² and a mean length per turn of 25cm. If
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12. A transformer is supplied at 1400V, 50Hz. The transformer has a net core area of 35cm². Calculate the number of turns required
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13. How does the Coulomb force affect charge interactions? (1 point)Like and opposite charges repel. Like and opposite charges
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14. A 0.1 m long thin wire is carrying 10 A peak current at 30 MHz, and is oriented alongthe z-axis. Find the magnetic vector
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15. Alice builds an electric motor by positioning an electromagnet between the poles of a permanent magnet. The electromagnet spins
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    2. asked by as
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16. How does the Coulomb force affect charge interactions?(1 point)ResponsesLike charges repel, and opposite charges attract.Like
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17. How does the Coulomb force affect charge interactions?(1 point)Responses Like and opposite charges attract. Like and opposite
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18. How does the Coulomb force affect charge interactions?Responses Like and opposite charges attract. Like and opposite charges
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19. Question 1.4 [2 marks]The north pole of a bar magnet is PULLED away from a solenoid as shown in the sketch below. Figure 3: Bar
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20. Which equation correctly relates the energy of electromagnetic radiation to its frequency?(1 point)Responses E=h cap e is equal
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21. Properties of electric field lines
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    2. asked by Samson
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22. zanoviabennett1557Suppose I have a current-carrying loop of wire with some magnetic dipole moment mu or micro. I place it in a
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23. A coil of 450turns with a mean length per turn of 25cm, rotates at 18m/s in a magnetic field that has a magnetic flux density of
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24. 10.Radio signals travel at a rate of 3 × 108 meters per second. How many seconds will it take for a radio signal to travel from
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    2. asked by fish
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25. 8.Radio signals travel at a rate of 3 × 108 meters per second. How many seconds will it take for a radio signal to travel from
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    2. asked by fish
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26. Three charges are placed on the xy _ plane Q1 = 2uc at (0,0.3m),Q2= 4uc at (0,_0.3m)and Q3= 5uc at (0.4m,0) what is the
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    2. asked by Anbasse Ahmed
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27. The torque produced by a six-pole, lap-wound DC motor is 500Nm. If the machine has 15 conductors per slot, calculate the number
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28. In 2 to 3 sentences, explain how the photoelectric effect supports a particle model of electromagnetic radiation. As part of
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29. What would explain why a positive and a negatively charged object experience a weaker amount of force than two positively
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30. What three factors affect electric force
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31. What do like poles do? (repel or attract).
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32. Calculate the magnitude of a force required to move a proton in a 6 * 10 ^ 3 * T magnetic field at 5m / s
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    2. asked by Benedicto
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33. make this shorterTo make an electromagnetic motor stronger, one could increase the number of turns in the coil of wire, increase
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    2. asked by MadisonGSaxton
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34. more coils of wire around the ferromagnetic coreA. stronger electromagnet B. weaker electromagnet
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    2. asked by the daudh8ayw
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35. How is an electromagnetic field produced?A. when particles are arranged around a conductor B. when an object has an electrical
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    2. asked by the daudh8ayw
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36. Electromagnet Current Intensity Number of Turns in the WireW medium 10 X low 10 Y medium 50 Z low 50 Which electromagnet will
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37. Explain Faraday's Law
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    2. asked by Eso Furu
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38. Use the image to answer the question.An electromagnet’s wire is reoriented such that the current is now moving straight out of
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39. Electric field lines for a positive charge go _______ from the charge, and field lines from a negative charge go ______ from the
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40. According to Coulomb's Law, which two factors affect the electrical force between two objects?
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41. Using Coulomb's Law, if the distance between two charged objects is increased, what happens to the electric force between them?a
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42. What three factors affect electric force? Choose all that applya whether the charge is positive or negative b potential kinetics
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43. Suppose a wire of length 10m and Mass 50g is suspended in air in a region with magnetic field of 0.5 T at right angle to the
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    2. asked by Hesingne Zironang
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44. Suppose a wire of length 10m and mass 10 grams is suspended in air in a region with magnetic field of 0.5T at right angle to the
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    2. asked by Hesingne Zironang
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45. What is the effect called when a current is induced in the coil when the magnet is moved in and out of it
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    2. asked by Hesingne Zironang
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46. What happens to the strength of a magnetic field when you increase the number of turns in a coil of wire wrapped around an iron
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47. Use the table of information about three electromagnets to answer the question.Electromagnet: J Current Intensity: high Number
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48. Which correctly describes the relationship between electronic currents and magnetic fields?Options are They have little impact
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49. moving a magnet quickly in and out of a coil wire producesa An electric current b Radio waves c A transformer
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50. A cube of length 2.5 cm is placed in a uniform magnetic field of B= (5i+4j+3k)T calculate the flux through the shaded face of
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    2. asked by Hanaayana
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51. moving a magnet inside, a coil of wire will induce a voltage in the coil. How is the voltage in the coil increased?a By holding
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52. which does not affect the strength of An electromagneta The Temperature of the coil b The number of loops in the coil c The
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53. how does a magnet affect another magnet something made of iron or a similar metal and moving charges?a It exerts a polar force b
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54. The electric force between two charged objects is influenced bya the size of the area between the objects b the difference
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55. How do electromagnets cause a maglev train to levitate above the track? (1 point)Responses Magnets in the track and magnets in
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    2. asked by u dont know me
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56. Page 3, Question #1- If the number of turns in a coil wire around the iron core are increased, how will this affect the magnetic
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    2. asked by anonymous
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57. Based on the information in the table on Page 2, answer the following questions:What will happen to the magnetic force of the
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    2. asked by anonymous
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58. Page 4- Does increasing the distance between two objects that are charged make the electric force stronger or weaker?
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    2. asked by anonymous
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59. define electric force in one sentence.
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    2. asked by anonymous
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60. State Faraday's law of electromagnetic induction
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    2. asked by Hanaayana
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61. Object ChargeA +1 B +2 C -1 D -2 Assuming other factors are constant, which two objects will have the strongest ATTRACTIVE force
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62. There are two objects, one with a +2 charge and one with a -2 charge. If we increase the distance between the two objects, what
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    2. asked by The Collector
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63. Below is a table of 6 different interactions between charges (C) found on two objects called Object A and Object B. Which of the
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64. Which of the following factors would decrease the magnetic field strength of an electromagnet?(1 point)increasing the current or
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65. When two charged particles are moving toward each other, their velocities decrease until they eventually come to a stop. What
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66. Which pair of objects will have an attractive electric force?Pair Object 1 Charge Object 2 Charge A -2 -1 B -3 +1 C +3 +1 D +1
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67. 9. As the red North-pole (N-pole) of the bar magnet leaves the coil and slowly moves to the left, do the blue electrons move up
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68. Increase the number of Loops to 3 again. Slowly move just the South-pole (S-pole) end of the bar magnet to the left inside the
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69. Increase the number of Loops to 3, and move the bar magnet right and left through the coil of wire again. What do you observe?
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70. Although magnetic fields are ______, one common way they people investigate them is to use ____ filings
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71. what do like charges do
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    2. asked by NOAH
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72. rephrase thisMagnetic fields are created by the flow of electric current through a conductor, with the strength of the magnetic
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73. Two electromagnets are made with the same core and the same type of wire. Electromagnet A has a low-intensity current, and
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74. Strength of Magnetic Forces Quick Check1 of 51 of 5 Items Question Use the table of information about four electromagnets to
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75. For the magnetic field created around the current carrying the wire and electrum the larger the current, the stronger than
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76. 1. Which combination of charge and distance would lead to the strongest repulsive force ?A. a + 1 charge and a -1 charge at a
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77. How is an electromagnetic field produced?a. when a current runs through a conductor b. when an object has an electrical charge
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78. How is an electromagnetic field produced?(1 point)Responses when an object has an electrical charge when an object has an
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    2. asked by nuh uhh
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79. Use the table to answer the question.Electromagnet Current Intensity Number of Turns P medium 20 Q low 20 R low 15 Which list
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    2. asked by nuh uhh
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80. Which of the following will decrease the electrical force between two charges?decreasing the distance between the charges
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81. using coulomb's law, if the distance between two charged objects is decreased , what happens to the electric force between them?
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82. • non-contact force in which charged objects push or pull on other objects as a result of their charge.which one is right •
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83. Which of the following factors would decrease the magnetic field strength of an electromagnet?(1 point)Responses increasing the
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84. When two charged particles are moving toward each other, their velocities decrease until they eventually come to a stop. What
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85. What can provide the force needed to move electrons away from their nuclei?
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86. Fill in the blanks:If charges are gained or lost by a material it becomes positively (+) or negatively (-) charged creating a
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87. An electromagnet is a coil of wire with a current running through it. This creates an electromagnetic field. An additional
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88. Which of the following gives good evidence for the particle nature of EM radiation?photoelectric effect interference patterns
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89. How is a magnetic field produced?a. when an electromagnetic field interacts with a magnet b. when an object has an electric
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90. Two electromagnets are made with the same core and the same type of wire. Electromagnet A has a low-intensity current, and
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    2. asked by yes
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91. Which factors directly affect the magnetic force produced by an electromagnet?(1 point)Responses number of turns in the wire,
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    2. asked by yes
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92. Use the image to answer the question.A diagram shows a wire carrying a current in vertical direction. The magnetic field drawn
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    2. asked by nuh uhh
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93. Which of the following is the process of charging a conductor by bringing it near another charged object and then grounding the
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94. A solenoid is 1.41 m long and has 485 turns per meter. What is the cross-sectional area of this solenoid if it stores 0.320 J of
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95. A 1.56 m wire is wound into a coil with a radius of 3.03 cm. If this coil is rotated at 91.9 rpm in a 0.0672 T magnetic field,
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96. What causes the propagation of electromagnetic waves through space?Choose only ONE best answer. A Vibrations in the electric and
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97. if one object has +2 and +1 it more repulsive then one that has +1and +1
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98. Looking at the chart below, name the letter of the interaction that would result in a repulsive medium strength electric force.*
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99. Answer this please: Looking at the chart below, name the letter of the interaction that would result in a repulsive medium
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100. Answer this please: There are two objects, one with a +2 charge and one with a -2 charge. If we increase the distance between
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