11.1 Electrostatics

Cards (28)

  • The electrostatic force is a fundamental part of electrostatics.

    True
  • In contact charging, both objects end up with the same type of charge.
    True
  • The density of field lines shows the electric field strength.
    True
  • What type of charges do positive charges repel?
    Positive
  • What happens to a neutral object when a charged object is brought near it during induction charging?
    It becomes polarized
  • What do field lines indicate in an electric field?
    Direction of force
  • Field lines show the direction of force on a positive test charge.
  • Positive charges are attracted to negative charges.

    True
  • Steps in charging an object by friction
    1️⃣ Electrons transfer from one material to the other
    2️⃣ One material becomes positively charged
    3️⃣ The other material becomes negatively charged
  • Charging methods create imbalances of electrons, resulting in electrostatic charges.
    True
  • The strength of an electric field is measured by the electric field strength.
  • Match the material with its type:
    Copper ↔️ Conductor
    Rubber ↔️ Insulator
  • What type of charge is used in laser printers to attract toner?
    Electrostatic charge
  • In friction charging, rubbing two materials together causes electrons to transfer
  • Objects with the same charge type will repel
  • What does the density of field lines indicate in an electric field?
    Electric field strength
  • What are electrostatic charges?
    Static electric charges
  • What are the three main methods to charge objects?
    Friction, induction, contact
  • In charging by contact, electrons transfer from the charged object to the neutral object.
  • What do field lines indicate in an electric field?
    Force on a positive charge
  • Conductors have abundant free electrons.

    True
  • In electrostatic painting, charged paint particles are attracted to grounded metal surfaces.
  • The attraction and repulsion between electrostatic charges is called the electrostatic force.
  • What happens when a charged object is brought near a neutral object in induction?
    Polarization of charges
  • What governs the behavior of charged objects?
    Electrostatic force
  • What is the primary difference between conductors and insulators?
    Electron flow
  • What is static electricity caused by?
    Charge imbalance
  • Air purifiers use electrostatic precipitators to remove dust from the air.

    True