Question

An infinite number of charges each equal to Q are placed along the x-axis at x=1,x=2,x=4,x=8,.......... and so on.Find the potential and electric filed at the point x=0 , due to this set of charges:

• A. $\frac{Q}{2\pi {\epsilon }_0},\frac{Q}{3\pi {\epsilon }_0}$
• B. $\frac{Q}{10\pi {\epsilon }_0},\frac{Q}{3\pi {\epsilon }_0}$
• C. $\frac{5Q}{\pi {\epsilon }_0},\frac{Q}{3\pi {\epsilon }_0}$
• D. $\frac{10Q}{2\pi {\epsilon }_0},\frac{Q}{3\pi {\epsilon }_0}$

Answer 1

Answer: (A)