Calculating Electric Field at a Point from Multiple Charges

[learningphysics]

You should be using $$z^2 + x^2$$... L should only be in the limits of your integral...

Is E_z the only answer given in the back?

 

[yevi]

yes the only answer, this is what needed i guess.

Why do you ask? is it wrong?

 

[learningphysics]

yes the only answer, this is what needed i guess.

Why do you ask? is it wrong?

No, well that's the z-component... that doesn't include the other component... maybe I misunderstood the problem somehow... or maybe they left out that component... not sure...

Did they ask for the total field at (0,0,z), or just the z-component of the field at (0,0,z) ?

 

[yevi]

Sorry, just the Z.

Thanks, I got it :) .

 

[learningphysics]

Sorry, just the Z.

Thanks, I got it :) .

Ah. cool.