P3.1 Static and Charge

• Static electricity involves charges that are moving constantly.

  False
• Static electricity is created when two dissimilar materials are rubbed together, resulting in friction
• Positive charges are carried by protons, which are located in the nucleus
• The total amount of charge in an isolated system remains constant.


  True
• What provides the energy needed to dislodge electrons during friction?

  Friction
• Why does a material that loses electrons become positively charged?

  Surplus of protons
• During friction, what moves from one material to another to create charge?

  Electrons
• In the scenario of rubbing a silk cloth against a glass rod, which material becomes positively charged?

  Glass rod
• What law governs the magnitude of electrostatic forces between charges?

  Coulomb's Law
• The Earth acts as a large reservoir to absorb excess electric charges.

  True
• Order the steps in generating high voltage using a Van de Graaff generator:

  1️⃣ Electrons are sprayed onto a moving belt

  2️⃣ The belt carries electrons to a metal dome

  3️⃣ Electrons accumulate on the dome

  4️⃣ High voltage is generated
• Static electricity refers to the build-up of electric charge on the surface of an object
• The material that loses electrons becomes negatively charged.

  False
• Match the charge type with its description:

  Positive Charge ↔️ Surplus of protons

  Negative Charge ↔️ Excess of electrons
• The law of conservation of charge states that electric charge is neither created nor destroyed
• Friction between two dissimilar materials results in static electricity.


  True
• Positive charges are carried by fundamental particles called protons
• The law of conservation of charge states that the total charge in an isolated system remains constant
• Electrostatic forces between opposite charges are called attractive
• Why are metal appliance cases grounded?

  Prevent electric shocks
• How is static electricity used in photocopiers and laser printers?

  Attract toner particles
• What is static electricity caused by?

  Build-up of electric charge
• What is the fundamental process that creates static electricity through friction?

  Electron transfer
• Which fundamental particle carries a positive charge?

  Proton
• What does the law of conservation of charge state?

  Charge is neither created nor destroyed
• When Material A loses electrons, it becomes positively charged
• When Material A loses electrons, it becomes positively charged
• Negative charges are located in the electron shells around the nucleus.


  True
• Charge can be created during friction but cannot be transferred from one object to another.

  False
• Like charges repel each other, while opposite charges attract each other.


  True
• Electrostatic air filters use charged plates to attract dust and particles