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 (A)</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 (B)</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 (B)</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 (B)</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 (D)</p> Signup and view all the answers

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