Freight line. An electric charge Q is uniformly distributed along a thin line or rod of length 2a. Determine the potential at point P along the perpendicular bisector of the rod at a distance x from its center.

1. A point particle of charge 2.5 x 109 C and a mass of 3.65 x 107 kg in uniform electric field directed to the right. It is released from rest and moves to the right. It is released from rest and moves to the right. After it has traveled 1.45 m, its speed is 35 m/s. Find, a. work done on the particle b. change in the electric potential energy of the particle

1. Two point charges q1 = +26µC and q2 = −17.5µC are 64 cm apart.a. What is the potential energy of the system of two charges?b. What is the electric potential at a point between them 24 cm from q1?

1. A disk of radius R has positive charge Q distributed uniformly across its surface. The disk lies flat in the xy-plane, and the z-axis intersects the disk at its center. Z Q x y (a) Determine the electric potential at all points on the z-axis. Assume that the potential goes to zero infinitely far away from the disk. (b) From the potential you found in Part (a), determine the electric field at all points on the z-axis. Make sure that your electric field points in the correct direction above and below the disk.