Capacitance Post Quiz
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- 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
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