How much energy must a 6.0 V battery expend to fully charge a ccapacitor

  • Thread starter jhcollaz
  • Start date
  • #1
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Homework Statement



How much energy must a 6.0 V battery expend to fully charge a 0.13 µF and a 0.21 µF capacitor when they are placed in the following configurations?

Another question if anyone can help we get started on this one. I'm not sure where to begin

How strong is the electric field between the plates of an 0.86 µF air-gap capacitor if they are 1.9 mm apart and each has a charge of 74 µC?

Homework Equations



In my attempt at a solution.

The Attempt at a Solution



http://imgur.com/a/ELKdZ#1

Part b series

I keep getting 0.000001 J but it says it not right, can any one help me out?

Homework Statement





Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
508
4
I just did the same calculation and also got 0.000001, however, if you multiply it by 10^6, you get 1.445, which means the calculator is rounding off and not showing all the digits. It would probably be more accurate if you wrote 1.445 micro joules rather than 0.000001 J.
 

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