Electric Field Strength Question

AI Thread Summary
To determine the electric field strength at the midpoint between two charges, Q1 (+3C) and Q2 (-3C), separated by 1 meter, apply the superposition principle. Calculate the electric field generated by each charge at the midpoint, treating the other charge as non-existent. The distance from each charge to the midpoint is 0.5 meters. By adding the vectors of the electric fields from both charges, the net electric field strength can be found. This approach simplifies the calculation and yields the correct result.
DLxX
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I need help with the following question.

A diopole is made up of two charges, Q1 and Q2, that are separated 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.
 
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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.
 
DLxX,

Have you heard of the superposition principle ? Do you know how to calculate the field at a certain distance from a point charge ?
 
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
 
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