Four point charges – q, + q, + q and – q are placed on y-axis at y = – 2d, y = – d, y = + d and y = + 2d, respectively. The magnitude of the electric field E at a point on the x-axis at x = D, with D >> d, will behave as:

Four points charges -q,+q,+q and -q are placed on y-axis at y=-2d, y=-d,y=+d and y=+2d, respectively. The magnitude of the electric field E at a point on the x-axis at x=D, with Dgtgtd , will behave as :

Three point charges -Q, Q and Q are placed on a straight line with distance d between charges as shown. Find the magnitude of the electric field at the point P in the configuration shown which is at a distance a from middle charge Q in the system provided that a gt gt d . Take 2Qd=p .

Three point charges -Q, Q and Q are placed on a straight line with distance d between charges as shown. Find the magnitude of the electric field at the point P in the configuration shown which is at a distance a from middle charge Q in the system provided that a gt gt d . Take 2Qd=p .

Two point charges q and –q are at positions (0,0,d) and (0,0, –d) respectively . What is the electric field at (a,0,0 ) ?

Two point charges q and –q are at positions (0,0,d) and (0,0, –d) respectively . What is the electric field at (a,0,0 ) ?

Two point charges q and –q are at positions (0,0,d) and (0,0, –d) respectively . What is the electric field at (a,0,0 ) ?