Question

Calculate electric potential at adistance of 9 cm from a charge4 x10 -9 C

Answer 1

Answer:

refer to the attachment

Answer 2

Answer:

4*10^2

Explanation:

q=4*10^-9

r=9*10^-2

potential=kq/r

               =9*10^9*4*10^-9/9*10^-2

               =4*10^2