Capacitance Post Quiz

6 Questions | Total Attempts: 200

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Capacitance Post Quiz

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Questions and Answers
  • 1. 
    What is a capacitor?
    • A. 

      It is an electrical component that has the ability to store charge.

    • B. 

      An electrical component that is found in devices such as the iPhone

    • C. 

      An electrical component that reduces or resists electrical current flow

    • D. 

      A and b

  • 2. 
    What is the difference between a stylus pen and our nails?
    • A. 

      A stylus pen is made of a conductive material that can transmit an electric field that allows it to make contact whereas our nails are made of keratin which does not conduct electricity.

    • B. 

      A stylus pen is made with resistive material which allows the pen it to interact with the iphone screen whereas our nails are made of keratin which does not conduct electricity.

    • C. 

      All the above

  • 3. 
    What physical properties would change the overall capacitance of a capacitor?
    • A. 

      Making capacitor plates bigger

    • B. 

      Decreasing the distance between the capacitor plates

    • C. 

      Changing physical properties would not do anything to change how much electrical charge a capacitor can store

    • D. 

      A & B

  • 4. 
    What makes the stylus pen advantageous
    • A. 

      Allows users to more correctly pick the letter he/she wants

    • B. 

      Mimics a pen/pencil

    • C. 

      All of the above

    • D. 

      None of the above

  • 5. 
    What kind of electric circuit is involved in an iPhone?
    • A. 

      Series circuit

    • B. 

      Parallel circuit

    • C. 

      Combination of both

  • 6. 
    Why might Apple have decided on a capacitive screen over a resistive screen despite the fact that it is more costly
    • A. 

      Register only by conductive sources

    • B. 

      Saves more energy (battery life)

    • C. 

      Clearer/brighter screens

    • D. 

      All of the above