Question

An infinite line charge of linear charge density 1.5 x 10^-6 C/m (Coulombs per meter) lies on the z axis. The potential is zero at a radial distance of 2.5 m from the wire. I.e. V(r=2.5) = 0. Given this, find the potential at a radial distance r = 2.0 m from the wire.

Group of answer choices

4500 V

-6025 V

-1.27 x 10⁴ V

0 V

+1.27 x 10⁴ V

+ 6025 V

Answer 1

Solution

Answer: -6025V

12 Sdution The potential due to infuite live charge & Co)- Ilu(s) + c 20 E Where di lin charge density , is the radial distance 8=8.85x co Givens V(205)=0 =) (1. 5x100 + ln (205) 2x û x 8.85x10 12 20 472x104 m. Flm x lu (2) This potential at 8=2.0m, 2.472x104 15rlo V (2.0m) 2x 5 x 8,85x102 = –6022.067 Volos Nearest option is -6025 vo