- #1
jlmccart03
- 175
- 9
Homework Statement
The potential difference between the surface of a 2.2 cm -diameter power line and a point 1.9 m distant is 3.8 kV.
What is the magnitude of the line charge density on the power line?
Express your answer using two significant figures.
Homework Equations
V = (λ/2πε0)ln(2a/r)
The Attempt at a Solution
I simply converted some of the values to base units and got
3800 V = (λ/2π(8.9e-12C))(2(0.022m)/1.9m) = -5.6e-8 C/m which is -56.4 nC/m. Its wrong however. I don't get what I am doing wrong with I solve for λ.