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Quiz

Electric Fields

angus.magarey340 9 perguntas

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Perguntas do quiz (9)

  1. 1How does the force between two charges vary with the distance between them?
    1. AProportionally to the distance between them.
    2. BProportionally to the square of the distance between them.
    3. CInversely proportional to the distance between them.
    4. DInversely proportional to the square of the distance between them.
  2. 2How does the force between two charges vary with respect to charge?
    1. AProportional to the charge.
    2. BProportional to the square of the charge.
    3. CInversely proportional to the charge.
    4. DInversely proportional to the square of the charge.
  3. 3The magnitude of the force between two charges is 5N. What is the force if one charge is doubled?
    1. A1/5 N
    2. B5 N
    3. C10 N
    4. D25 N
  4. 4Continuing from Question 3. What is the force of the distance between them is reduced to 0.25m from 1m?
    1. A80 N
    2. B40 N
    3. C20 N
    4. DNone of the above.
  5. 5A point charge, qA = +2.5 mC is situated 2 metres from a second point charge, qB = -1.5 mC. What is the magnitude of the electrostatic force between the two charges?
    1. A9,000,000 N
    2. B8437.5 N
    3. C16,875 N
    4. D2,250,000 N
  6. 6Field lines point in the direction a positive charge would move if placed within that field.
    1. AVerdadeiro
    2. BFalso
  7. 7Which of the following statements about electric fields are correct.
    1. AMoving a charged object near an uncharged object causes the uncharged object to be repelled.
    2. BThe closer field lines are together the stronger the force is.
    3. CIn an electric field, the stronger the electric field is the larger the force on a charge in the field.
    4. DLike charges repel and unlike charges attract.
    5. EThe sign of the charge (positive or negative) affects the magnitude of the force.
    6. FThe sign of the charge (positive or negative) affects the direction of the force.
    7. GThe closer two charges are together the weaker the electrostatic force between them.
    8. HThe units for electric field strength are Newtons/metre.
  8. 8If a 25 mC charge experiences a force of 25 N on it. What electric field strength must it be experiencing?
    1. A1 N
    2. B1000 N
    3. C625 N
    4. D0.001 N
  9. 9The reason a charged balloon will stick to a wall is that:
    1. AThe charge is slightly sticky and acts like glue.
    2. BBalloon material sticks to walls.
    3. CElectrons hop back and forth between the wall and the balloon.
    4. DInduced opposite charges in the wall are closer than other wall charges.

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Descrição
Quiz sobre Electric Fields, criado por angus.magarey340 em 31-05-2014.
Idioma
English
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