Two charges of 15 pC and -40 pC are inside a cube with sides that are of 0.40-m length. Determine the net electric flux through the surface of the cube.
a. +2.8 N m2/C
b. -1.1 N m2/C
c. +1.1 N m2/C
d. -2.8 N m2/C
e. -0.47 N m2/C
Question 2
Suppose a uniform electric field of 4 N/C is in the positive x direction. When a charge is placed at and fixed to the origin, the resulting electric field on the x axis at x = 2 m becomes zero. What is the magnitude of the electric field at x = 4 m on the x axis at this time?
a. 0
b. 1 N/C
c. 2 N/C
d. 4 N/C
e. More information is needed to find the resulting field magnitude at this position.
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