Electricity Fundamentals in Applied Engineering
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Questions and Answers

What is the origin of the word 'electricity'?

  • From the English word for power
  • From the Greek word for static
  • From the Greek word for amber (correct)
  • From the Latin word for energy

    • What happens when a substance loses electrons to another substance?

  • It loses its electrical properties
  • It becomes positively charged (correct)
  • It becomes negatively charged
  • It becomes neutral

    • What is the term for the quantity of electricity held in an object?

  • Electric voltage
  • Electric resistance
  • Electric charge (correct)
  • Electric current

    • What type of electricity is characterized by its ability to attract other objects?

    <p>Static electricity</p> Signup and view all the answers

    Who is credited with the discovery of 'static electricity'?

    <p>Thales of Miletus</p> Signup and view all the answers

    What is the result when a positive charge equals a negative charge?

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

    What is the characteristic of an atom with a neutral charge?

    <p>It has an equal number of protons and electrons.</p> Signup and view all the answers

    What is the movement of free electrons responsible for?

    <p>The flow of electric current.</p> Signup and view all the answers

    What is the purpose of a conductor in an electric circuit?

    <p>To allow the flow of electric current in one or more directions.</p> Signup and view all the answers

    What is the force that moves charge in an electrical field also known as?

    <p>Electromotive force</p> Signup and view all the answers

    What is measured in volts (V) in an electric circuit?

    <p>The voltage, or electromotive force.</p> Signup and view all the answers

    What is the purpose of a circuit in an electric circuit?

    <p>To provide a complete path for the flow of electric current.</p> Signup and view all the answers

    What type of current flows in only one direction?

    <p>Direct current</p> Signup and view all the answers

    What is the definition of resistance in an electric circuit?

    <p>The difficulty of passing an electric current through a substance.</p> Signup and view all the answers

    What is an advantage of alternating current over direct current?

    <p>It is easily produced</p> Signup and view all the answers

    What is an example of an insulator?

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

    What is the purpose of a rectifier?

    <p>To convert AC to DC</p> Signup and view all the answers

    What is the unit of measurement for voltage?

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

    What is the function of the ground in an electrical circuit?

    <p>To provide a common return path for electric current</p> Signup and view all the answers

    What is the binding energy in an atom?

    <p>The force of attraction between positive and negative charges</p> Signup and view all the answers

    What is the method to achieve free electrons?

    <p>By decreasing the valence electron count</p> Signup and view all the answers

    What is the unit of measurement for electric current?

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

    What is one coulomb equal to?

    <p>6.25 x 10^18 electrons</p> Signup and view all the answers

    What is the purpose of a powerbank?

    <p>To store electric energy</p> Signup and view all the answers

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