Two charges are arranged as shown. Charges 1 and 2 have the same size, but q1 is positive and q2 is negative . What is the direction of the total electric field produced by the charges at location B ?  Up and Left  None, E is zero  Down  Down and Right  Up

Four equal charges (all +q) are placed on the corners of asquare with side length a.   a.)  Find an algebraic expression for the magnitude of theelectric force felt by the charge in the lower left-hand corner(circled) due to the other charges. b.) Make a sketch of the electric field lines associated with this charge distribution. Be sure to draw linesboth inside and outside the square.

Two conducting metal spheres are shown below: +2.0 x 10-6 C +1.0 x 10-6 C A The spheres are identical in volume and mass, but the have different charges as shown. Suppose they are connected to each other by a copper wire. What then would be the charge on sphere A? What would be the charge on sphere B?

Electric charges are arranged as shown in the diagram below. Q7.5×10-6 C (+ P 0.20 m 0.20 m Q-2.5x10-6 C What is the electric field (magnitude and direction) at point P midway between the charges?