Consider a 2.54-cm-diameter power line for which the potential difference from the ground, 19.6 m below, to the power line is 115 kV. Find the line charge density on the power line. Wolfson, Richard. Essential University Physics, Volume 2 (p. 431). Pearson Education. Kindle Edition.

The line charge density is

Explanation:

Given that,

Diameter = 2.54 cm

Distance = 19.6 m

Potential difference = 115 kV

We need to calculate the line charge density

Using formula of potential difference

Where, r = radius

V = potential difference

Put the value into the formula

Hence, The line charge density is

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr

the ima (higher than 1m) will be greater than the ima with the height of 1m.