Capacitors/Current/Ohm's Law - Please help I'm so confused

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SUMMARY

This discussion focuses on understanding capacitors, their symbols, and the principles of Ohm's Law. The user expresses confusion regarding capacitor diagrams, specifically the representation of capacitors in series and parallel configurations. Key concepts highlighted include the movement of charges on conductors, the equations for combining capacitors, and the relationship between voltage and charge across a capacitor. The emphasis is on grasping the underlying concepts rather than merely applying formulas.

PREREQUISITES
  • Understanding of basic electrical circuit symbols
  • Knowledge of capacitor configurations: series and parallel
  • Familiarity with charge movement on conductors
  • Comprehension of the relationship between voltage and charge in capacitors
NEXT STEPS
  • Study the equations for combining capacitors in series and parallel
  • Learn about the behavior of charges on conductors in electrical circuits
  • Explore the fundamentals of Ohm's Law and its application to capacitors
  • Review circuit diagram symbols and their meanings for better visualization
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Students preparing for physics exams, educators teaching electrical engineering concepts, and anyone seeking to deepen their understanding of capacitors and circuit analysis.

riseofphoenix
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How do I go about solving this?

CAPACITORS_zps383921c2.png


Whenever I see a capacitor diagram/an image like this i always freak about because
1) I don't know what to ask myself when I see it
2) I'm not sure I know what's going on - other than the fact the the | | means: +| |-
I don't know what the squiggly lines /\/\/ mean either :(
3) I don't know how to solve this particular problem or how the pieces fit together.
4) I don't know how to distinguish a capacitor in series and a capacitor in parallel - especially in this problem

Please help! I've studied for the physics test I am about to take tonight at 7 pm and I've understood all the plug and chug problems.
It's this stuff in particular I just don't get.
 
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You should hold in your head the picture of two plates with charge on them like you did in class ... these are just two conductors like any other conductor.
(It sounds like you need to revise the circuit diagram symbols too.)

You need to understand how charges move about on conductors.
You need to know the equations for combining capacitors.
You need to know the relationship between the voltage across a capacitor and it's charge.

Thing is, this sort of problem is about understanding things, not sticking numbers into equations.
 

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