Physics - Electric Field

Electric Field Four identical point charges (q = + 10.0 micro coulomb) are located on the corners of a rectangle. The dimensions of the rectangle are L = 60.0 cm and W = 15.0 cm. Calculate the magnitude and direction of the resultant electric force exerted on the charge at the lower left corner by the other three charges.

Physics - Electric Flux

A charge of 170 micro coulomb is at the center of a cube of edge 80.0 cm. a)Find the total flux through each face of the cube. b)Find the flux through the whole surface of the cube. c)What if ? Would your answers to part a or b change if the charge were not at the center? Explain.

Potential Difference

A uniform electric field of magnitude 250 V/m is directed in the positive x direction. A +12.0 micro coloumb charge moves from the origin to the point (x, y) = (20.0 cm, 50.0 cm). a) What is the change in the potential energy of the charge-field system? b) Through what potential difference does the charge move?

The answer is given in Coulombs

Two positive chrages, when combined, give a total charge of +8.7 micro Couloumbs. When the charges are seperated by 3.00 meters, the force exerted by one charge on the other has a magnitude of 8.30E-3 Newtons. Find the amount of each charge.

Answer is in Newton-meters

A long thin rod (length = 3.5 maters) lies along the x axis, with its midpoint at the origin. In a vacuum, a +7.0 micro Coulombs point charge is fixed to one end of the rod, while a -7.0 micro Coloumb point charge is fixed to the other end. Everywhere in the x, y plane there is a constant external electric field( magnitude = 4.0E3 Newtons/Coulombs) that is perpendicular to the rod. With respect to the z axis, find the magnitude of the net torque applied to the rod.