three equal and similar charges each of 'q' units are placed at the corners of the square of side 'a' .find the electric field strength at the fourth corner?

Question

bobpursley · Answer

E=kq/r^2 and in the direction of r.

Add these as vectors. If you are careful, you can use symmetry to simplify it.

Here is a similar question on the symmetry issue. http://www.jiskha.com/display.cgi?id=1270726327

Anonymous · Answer

3000mm=____m?

roshan · Answer

Can you please Explain and Show the answer ?