The figure shows four orientations of an electric dipole in an external field. For each of the four dipoles, draw a curved arrow on the figure from the positive charge indicating if it will rotate clockwise or counterclockwise. Please explain clearly how you determine the manner in which it will rotate.

What is the direction of the electric field at point P given the charges shown below? Note, the charges all have equal magnitude. See slide "Review question #4" for pictures of arrows described in answers.   Down and to the right (more to the right than down) Equally down and to the right Equally up and to the right Equally down and to the left

the metal sphere on the right is initially neutral.  In step 1, a negatively charged rod is brought near.  Starting with step 2, explain what is happening in each step.    Explain why the sphere is left with a net positive charge (picture posted)

Two point charges, +3 C and -6 C, are separated by 2.0 m. They are NOT free to move. What is the magnitude of the electrostatic (Coulomb) force between the charges? Set up the needed equation(s), but do not attempt to obtain a numerical result. (Leave your answer as a function of k.) What is the net electric field at the point halfway between the two charges? Set up the needed equation(s), but do not attempt to obtain a numerical result. (Leave your answer as a function of k.) What is the net electric potential at the point halfway between the two charges? Set up the needed equation(s), but do not attempt to obtain a numerical result. (Leave your answer as a function of k.)

Five identical point charges, each having charge Q, are equally spaced on a semicircle of radius R as shown in the figure. Find the Force (in terms of k, Q, and R) on a charge q located at the center of the semicircle. See attachments

A 5 g dust particle has a charge of 7 ?C and is suspended between two oppositely charged parallel plates as shown below. The distance between the particle & the edges of the plates is much greater than the distance between the plates. Each plate has the same constant uniform charge density. (note: Top plate is negative and bottom is positive) Find the voltage between the plates. V=

Two small balls with a mass of 2 g each are hanging on two separate strings 0.25  m (25 cm)  long attached to a common point. They are given an identical negative charge and spread apart to a distance 3 cm from each other. Determine the charge on each ball by finding the forces in equilibrium and using Coulomb's law. How many electrons are there on each ball? What will happen in an identical situation if the mass of the balls is cut in half? What would happen if the charge on each ball is doubled?

The figure below shows a dipole. If the positive particle has a charge of 31.9 mC and the particles are 2.70 mm apart, what is the electric field at point A located 2.00 mm above the dipole's midpoint? (Express your answer in vector form.) N/C E = A d/2 y d/2 X

The figure below shows a dipole. If the positive particle has a charge of 35.9 mC and the particles are 2.88 mm apart, what is the electric field at point A located 2.00 mm above the dipole's midpoint? (Express your answer in vector form.) 7 = N/C A d/2 V d/2

Determine the magnitude and direction of the electric field at points 1 and 2 in the figure below. 75 V 50 V 1 T 1 1 1 I 1 1 1 25 V OV 1 V I 1 1 I 1 cm 1 cm