Find the charge on the outer surface

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  • #2
BvU
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Hello Fatima,

PF is not intended for stamp-approvals. If you convince yourself that -9 nC is the right answer, then that IS your answer for this exercise !

And why shouldn't it be the right answer ?
 
  • #3
BvU
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Yeah, well...
 
  • #4
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Hello Fatima,

PF is not intended for stamp-approvals. If you convince yourself that -9 nC is the right answer, then that IS your answer for this exercise !

And why shouldn't it be the right answer ?
I was not pretty sure. Just wanted to confirm my answer. Sorry for multiple questions but my exam is after hours. I wish I have not broken the forum rules. Thanks
 
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  • #5
BvU
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Best of luck for your test! :wink:
 
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  • #6
ehild
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  • #7
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You wrote that Q=1 nC and then that Q=-10+1 =-9 nC. These are wrong, although the answer "A" is correct. Pay more attention!
##Q_0=-10+1=-9nC##
 
  • #8
ehild
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##Q_0=-10+1=-9nC##
-10+1 is not -9 nC . Write out the units at both sides of an equation.
 
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