Question
Question: Three points A, B and C are at a distance of 1m, 2m and 1m from an infinitely long charged wire of l...
Three points A, B and C are at a distance of 1m, 2m and 1m from an infinitely long charged wire of linear charge density l C/m. A charge q is taken from A to B, B to C and finally C to A. Which of the following is/are correct about the work done in the above process –
A
WAB = 2WBC
B
WAB = – WBC
C
WBC = 0
D
WAB = 0
Answer
WAB = – WBC
Explanation
Solution
WAB = q (VB – VA)
VBC = q (VC – VB)
VA = VC
\ WAB = – WBC