Electrostatic Force Demonstration Quiz
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Questions and Answers

What causes the hanging rod to move away when a second glass rod rubbed with silk is brought near it?

  • The glass rod creates a magnetic field that attracts the hanging rod
  • The glass rod creates an electric field that repels the hanging rod (correct)
  • The glass rod creates an electric field that attracts the hanging rod
  • The glass rod creates a magnetic field that repels the hanging rod

    • What causes the hanging rod to move toward a nearby plastic rod rubbed with fur?

  • The plastic rod creates a magnetic field that repels the hanging rod
  • The plastic rod creates an electric field that attracts the hanging rod (correct)
  • The plastic rod creates a magnetic field that attracts the hanging rod
  • The plastic rod creates an electric field that repels the hanging rod

    • What type of communication is involved in the attraction or repulsion between the hanging rod and the nearby rods?

  • Contact forces
  • Electric or magnetic fields (correct)
  • Breeze
  • Sound waves

    • What do scientists attribute the forces in the demonstrations to?

    <p>Electric charge</p> Signup and view all the answers

    Why does the hanging rod move without any contact or obvious communication between the rods?

    <p>Due to electric charge set up on the rods</p> Signup and view all the answers

    What did scientists figure out about the forces involved in these types of demonstrations?

    <p>They are due to electric charge</p> Signup and view all the answers

    What type of force is present in the first demonstration (glass rod rubbed with silk)?

    <p>Repulsive force due to electric charge</p> Signup and view all the answers

    What type of force is present in the second demonstration (plastic rod rubbed with fur)?

    <p>Repulsive force due to electric charge</p> Signup and view all the answers

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