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Point Charge

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


Points A and B are 4.8cm and 7.2cm away from a point charge of -6.2[tex]\mu[/tex]C at point C. AC and CB are at right angles.

a. How much work must be done in moving a 2.0x10^-12C charge from A to B
b. what is the potential difference between points A and B?

Ive been working at this problem with a friend for about a half hour. I have No idea what to do. Everything we tried failed.
 

Answers and Replies

  • #2
181
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I would answer b) first.
 
  • #3
42
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i tried that.. but maby iwas using the wrong equation. Which equation should i be using?
 
  • #4
181
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The one which tells you the potential at distance r from a charge Q
 
  • #5
42
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so V=kq/r. I tried this. It did not work.
 

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