Parallel-plate capacitor charge problem

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SUMMARY

The discussion centers on calculating the charge of a parallel-plate capacitor formed by two 10.0 cm diameter electrodes spaced 0.56 cm apart, connected to a 14 V battery. The charge, calculated using the formula C = K*A/d, results in 1.74 x 10^-10 coulombs immediately after disconnecting from the battery. The final answer, expressed in two significant digits, is confirmed as 1.7 x 10^-10 coulombs. The importance of including units in calculations is emphasized for clarity.

PREREQUISITES
  • Understanding of parallel-plate capacitor principles
  • Familiarity with the formula C = K*A/d
  • Basic knowledge of electric charge and voltage
  • Ability to perform calculations with significant figures
NEXT STEPS
  • Study the derivation and applications of the capacitor formula C = K*A/d
  • Learn about the effects of dielectric materials on capacitance
  • Explore the concept of electric field strength in capacitors
  • Review significant figures and their importance in scientific calculations
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This discussion is beneficial for physics students, educators, and anyone interested in understanding the principles of capacitors and electric charge calculations.

Allyson
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Homework Statement


Two 10.0 -diameter electrodes 0.56 apart form a parallel-plate capacitor. The electrodes are attached by metal wires to the terminals of a 14 battery. After a long time, the capacitor is disconnected from the battery but is not discharged.
a. What is the charge on each right after the battery is disconnect? What is q1, q2 in coulombs


Homework Equations


C=K*A/d


The Attempt at a Solution

I have tried several attempts, but still have the answer 1.74*10^-10. What have I done wrong.
 
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This is how I did the work.
pi*.01/4=.007853982*8.85418/.0056=12.42*10^-12*14=1.74*10^-10, 1.7*10^-10 Answer in 2 significant digit?
 
Is one saying that 1.7*10^-10 is the answer?

1.74*10^-10 in two significant digits would be 1.7*10^-10.


It would also help if one provides units. I would guess the capacitor plates have a 10 cm dia, and are 0.56 cm apart?

Also, please write all the equations. Please see - http://hyperphysics.phy-astr.gsu.edu/hbase/electric/capac.html
 

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