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Homework Help: Electric Field Strength Question

  1. Jan 16, 2005 #1
    I need help with the following question.

    A diopole is made up of two charges, Q1 and Q2, that are seperated by a distance of 1 meter. Q1 has a charge of +3C and Q2 has a charge of -3C. What is the electric field strength of the field set up by these two charges at a point exactly halfway between them?

    I know the formula for this type of question, and it seems fairly simple as far as just entering in the values, but I'm having a hard time figuring out what Q and the distance is going to be.
     
  2. jcsd
  3. Jan 16, 2005 #2

    dextercioby

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    Hold on,what Q??The distance is half a meter...

    You just have to add two vectors,that's it.

    Daniel.
     
  4. Jan 16, 2005 #3

    Gokul43201

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    DLxX,

    Have you heard of the superposition principle ? Do you know how to calculate the field at a certain distance from a point charge ?
     
  5. Jan 16, 2005 #4
    Yeah its just superposition, just take the E field generated with respect to Q1 at the midpoint, as if Q2 did not exist, and add it to the E field generated with respect to Q2 at the midpoint, as if Q1 did not exist, and you should get your net E field.

    Athalus
     
  6. Jan 16, 2005 #5

    dextercioby

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    Exactly,so do that...

    Daniel.
     
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