Dont know how to use capcitor or its uses

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Discussion Overview

The discussion revolves around the understanding and application of capacitors, particularly in the context of a homework problem. Participants express confusion about how to use capacitors and their functions, seeking quick answers for an upcoming university test.

Discussion Character

  • Homework-related
  • Debate/contested

Main Points Raised

  • One participant states they received a current of 2.5 amps while attempting to ignore the capacitor, indicating a lack of understanding of its use.
  • Another participant suggests using Google Search and books for learning about capacitors, implying that self-study is necessary.
  • A participant shares a link to a Wikipedia article on time constants and explains that after one time constant, a capacitor will charge to approximately 0.632 times the supply voltage.
  • There is a question about calculating the voltage drop across a resistor and the resulting current, with a request for clarification on how capacitors work.
  • One participant expresses frustration about the complexity of information found online and the inadequacy of their textbook regarding capacitors.
  • Another participant reiterates the need for self-directed learning, quoting that "there is no royal road to learning." They also mention the participant's location in Egypt and a lack of resources for learning.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the best way to learn about capacitors, with some advocating for self-study while others express frustration with the available resources. The discussion remains unresolved regarding the specific application of capacitors in the homework problem.

Contextual Notes

Participants express varying levels of understanding and access to educational resources, which may affect their ability to grasp the concepts discussed. There are references to specific calculations and assumptions that have not been fully resolved.

tetoo
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Homework Statement



Picture1.jpg


Homework Equations





The Attempt at a Solution


i tried to ignore the capacitor and i got 2.5 amp bec i don't know how to use capacitor or its uses
 
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tetoo said:
...bec i don't know how to use capacitor or its uses

Time to open a book then!
 
tetoo said:
i don't know how to use capacitor or its uses

There is this really nifty facility called "Google Search". You would be well advised to learn how to use it.
 
http://en.wikipedia.org/wiki/Time_constant

After one time constant the capacitor will be charged to about 0.632 * 500V.
Now you just need to calculate the voltage that drops over the resistor and divide that by 200 Ohm.
 
phinds said:
There is this really nifty facility called "Google Search". You would be well advised to learn how to use it.

Pranav-Arora said:
Time to open a book then!
do i have to say every time i post something that these questions are just out of book and i need quick answers my book doesn't contain a lot of info about the capacitor your posts arent helpful i am in vacation i just solve these questions to apply for a university test which will contain questions from many books not in my high school unfortunately and when i googled it i found really complex things :mad:
 
DrZoidberg said:
http://en.wikipedia.org/wiki/Time_constant

After one time constant the capacitor will be charged to about 0.632 * 500V.
Now you just need to calculate the voltage that drops over the resistor and divide that by 200 Ohm.

do you mean that the final voltage will be 500-316=184 and current will be 0.92 amp or i have to do something else thanks for your help dr i really appreciate it but my friend told me that the resulting voltage will be opposite in direction to that of battery can you explain how the capacitor work thx.
 
tetoo said:
do i have to say every time i post something that these questions are just out of book and i need quick answers my book doesn't contain a lot of info about the capacitor your posts arent helpful i am in vacation i just solve these questions to apply for a university test which will contain questions from many books not in my high school unfortunately and when i googled it i found really complex things :mad:

There's your problem right there.

"There is no royal road to learning"

http://www.infoplease.com/dictionary/brewers/royal-road-to-learning.html
 

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