Question

1)Consider the symmetrically arranged charges in the figure, in which ?a=?b=−2.05 μC and ?c=?d=+2.05 μC . Four charges located at the corners of a square. Charge q subscript a is at the upper left corner. Charge q subscript b is at the upper right corner. Charge q subscript c is at the lower left corner. Charge q subscript d is at the lower right corner. A fifth charge q is located at the exact center of the square. Determine the direction of the electric field at the location of charge ? .

a)left

b)down and right

c)up and left

d)up and right

e)up

f)down and left

g)down

h)right

2)Calculate the magnitude of the electric field ? at the location of ? given that the square is 5.85 cm on a side. ?= N/C

Answer 1

1) The direction to the North 2) The distance is, ) V2(5.85x102 4.1366x1o2 m 4kq cos 45 r= The net electric field is, 7" 4(9x109 )(2.0% 10-6)cos45 4.1366x 10-2) = 3.05 × 107 N/C