Electrostatics> Four point charges q,q,-q,-q are held fix...

Four point charges q,q,-q,-q are held fixed at the corners of square ABCD with diagonals of length 2l. Determine the field intensity at a point distance x from the plane of the square on its axis.

Zunaid Sorathiya , 10 Years ago

Grade 12

7 Answers

Saurabh Kumar

Last Activity: 10 Years ago

ELECTRIC FIELD WOULD BE DIRECTED VERTICALLY UPWARD...
Calculate the vertical component of individuals (3 positive charge) as cancelled by other fourth negative charge..
Find the resultant and get the answer..

Zunaid Sorathiya

Last Activity: 10 Years ago

sir not understand how three positive charges ??

Satviki Pathak

Last Activity: 9 Years ago

I guess the answer is zero...the vertical components of the two positive and negative charges should cancel out...

Satviki Pathak

Last Activity: 9 Years ago

and the horizontal components as well cancel out i guess..

Satviki Pathak

Last Activity: 9 Years ago

no wait the vertical components will cancel out and the horizontal wont....

Zunaid Sorathiya

Last Activity: 9 Years ago

No satviki its not Zero ... given ans : k2(2)^1/2ql/(l²+x²)^3/2

grenade

Last Activity: 9 Years ago

consider charges on a square and then mark the direction of forces b/w two of the charges one from the squrae and other of the out of plane and then take out the resultants

thus u will find that the verticals are cancelled the then take out the final anser