Electric Current and Drift Velocity in Metallic Conductors
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Questions and Answers

What is the definition of electric current in terms of charge flowing across a conductor?

  • Amount of charge in a conductor
  • Intensity of electric field
  • Velocity of charge carriers
  • Ratio of charge to time interval (correct)
  • How is current defined when considering the limit of the time interval approaching zero?

  • Ratio of charge to time interval (correct)
  • Electric field intensity
  • Charge flowing per second
  • Drift speed of conduction electrons
  • What is the SI unit of current?

  • Joule
  • Ohm
  • Ampere (correct)
  • Coulomb
  • What happens to the current if the time interval in the definition of current is decreased?

    <p>Current remains the same</p> Signup and view all the answers

    Which order of magnitude is typical for currents in domestic appliances?

    <p>Tens of thousands of amperes</p> Signup and view all the answers

    In atoms and molecules, why are electrons and nuclei bound to each other?

    <p>Due to electromagnetic forces</p> Signup and view all the answers

    What kind of charged particles exist freely in nature in the upper strata of the atmosphere?

    <p>Ions</p> Signup and view all the answers

    'Bulk matter is made up of many molecules.' What property of matter does this statement highlight?

    <p>'Bulk' property</p> Signup and view all the answers

    'An electric charge will experience a force if an electric field is applied.' What phenomenon does this statement describe?

    <p>'Force on charge'</p> Signup and view all the answers

    'Bulk matter is made up of many molecules.' How many molecules are approximately present in a gram of water?

    <p>$10^{22}$ molecules</p> Signup and view all the answers

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