Question

The cross section of a long coaxial cable is shown in the figure, with radii as given. The linear charge density on the inner conductor is -30 nC/m and the linear charge density on the outer conductor is -90 nC/m. The inner and outer cylindrical surfaces are respectively denoted by A, B, C, and D, as shown. (ε 0 = 8.85 × 10-12 C2/N · m2) The radial component of the electric field at a point that 43 mm from the axis is closest to

Answer 1

the boxes are the permittivity constant. MC answers are zero 1.3*10^4 -1.3*10^4 3.8*10^4 and -3.8*10^4

Answer 2

I think its 1.3*10^4 but im not sure if its positive or negative

Answer 3

I did 60/(permittivity constant*4pi*r)

Answer 4

i mean 60*10^-9

Answer 5

What are you looking for?

Answer 6

the electric field at 43 mm

Answer 7

closest to is saying which of the mc options is right which are listed above

Answer 8

MC answers are zero 1.3*10^4 -1.3*10^4 3.8*10^4 and -3.8*10^4