Point charges qa, qb, and qc are located at the corners of an equilateral triangle, 26cm on a side. Charge qa = 1.8nC is located at the top, charge qb = -7.9nC is located at the right and charge qc = 1.9nC is located at the left. Find the magnitude of the electric field in newtons per coulomb at the center of the triangular configuration of charges. Find the direction of the electric field in degrees below the right-pointing horizontal (positive x-axis)

Problem 8:  The electric force experienced by a -4.8 μC charge at some point P has a magnitude of 18 N and points due North.  Part (a)  What is the magnitude of the electric field, in newtons per coulomb, at P?   Part (b)  What is the direction of the electric field at point P?  Part (c)  What is the magnitude of the force, in newtons, that an electron would experience if it were placed at point P instead of the given charged particle?  Part (d)  If a proton were placed at point P instead of the electron, what is the magnitude of the force, in newtons, that it would experience?  Part (e)  What is the ratio of the magnitude of the acceleration of an electron to that of a proton, when the electric field acting on each has the same strength?

The drawing shows two situations in which charges are placed on the x and y axes. They are all located at the same distance of 5.00 cm from the origin O. For each of the situations in the drawing, determine the magnitude of the net electric field at the origin. -l.0 μC +1.0 uC +2.0 uC -3.0 µC +4.0 µC -1.0 uC o! +6.0 uC (b) (a)

Four point charges, q1 = 8.2 uC, q2 = -7.8 uC, q3 = 1.7 uC and q4 = -5.9 uC, are arranged in a square with side lengths L = 7.5 cm. What is the magnitude of the electric field at the centre of the square?