Determine which of the following statements is true about electric field lines in the vicinity of two point charges of equal magnitude and opposite sign
a. they are small according to the magnitude of the loads decrease
b. does not depend on the magnitude of the loads
c. indicate the relative magnitude of the electric field
d. indicates the direction of the electric field
e. is larger as the magnitude of the loads increases
For a long charge cable determine which of the following is true for the electric field
a. It is inversely proportional to the distance from the loaded line
b. It is directly proportional to the square of the distance from the loaded line
c. It is directly proportional to the distance of the loaded line
d. None of the above
e. It is a constant for all distances from the loaded line
A conductive "hollow" sphere has a total charge -2Q. A charging point + Q is in the center. Determine the total load on the outer surface.
a. + 2Q
b. + Q
The electric field at 2.0 m from a strut charge has a magnitude of 80,000 N / C. Determine the intensity of the electric field at a distance of 4.0 m.
a. 40,000 N / C
b. 20,000 N / C
c. 160,000 N / C
d. 320,000 N / C
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