True/False Questions about Capacitance

  • Thread starter Thread starter P1nkButt3rflys
  • Start date Start date
  • Tags Tags
    Capacitance
AI Thread Summary
The discussion focuses on true/false statements regarding parallel-plate capacitors, with participants confirming that the charges on the plates are equal but opposite, capacitance stores electric charge, and is inversely proportional to plate separation. The dielectric medium does not store charge, making statement four false, while adding a dielectric increases capacitance, contradicting the fifth statement. The user initially struggled with the answers but eventually clarified their understanding, concluding that all statements are false. The thread highlights the importance of accurately interpreting the properties of capacitors. Overall, the discussion emphasizes the fundamental principles of capacitance and the role of dielectrics.
P1nkButt3rflys
Messages
16
Reaction score
0
Answer true/false to the following statements about parallel-plate capacitors.


1) The charges on the two plates of a capacitor are equal.
2) Capacitance is the property of a device that enables it to store current.
3) The capacitance of a parallel-plate capacitor is proportional to the separation of the plates.
4) Charge is stored in the dielectric medium between the plates of a capacitor.
5) Adding a dielectric between the plates of an air capacitor decreases its capacitance.

So far:

1) False -charges on the two plates of a capacitor are equal BUT OPPOSITE.
2) False - ... enables it to store ELECTRIC CHARGE
3) False - capacitance is INVERSELY proportional to the separation of the plates.
4) True
5) False - adding a dielectric between the plates INCREASES its capacitance.

All incorrect answers I've tried: FFFTF, FTFFF, FTFTF, FTFTT, TFFTF, TTFFF, TTFTF, TTFTT

I've tried 8 different answers to no avail. I keep thinking I am interpreting the questions wrong.
If anyone can explain any of my errors I would really appreciate it!
 
Physics news on Phys.org
I figured it out after looking at it again.

4) Is false when I assumed it was True.

All answers are False :)

Thank you for taking the time to read this regardless!
 
As there are just 32 possible answers, I wonder how many attempts you have (apparently at least 9).
 
15 attempts are allowed.

I'm glad I was able to figure it out and understand the reasoning behind each one.
 
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Thread 'Correct statement about a reservoir with an outlet pipe'
The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
Back
Top