10. An electric dipole consists of two source charges, + 2.80 µC and - 2.80 µC, each placed 0.475 mm away from the origin O along the x-axis as shown below. The electric field and the electrical potential at the origin O, respectively, are?
0.475 mm
0.475 mm
+ 2.80 µC
– 2.80 µC
x-axis
source
source
origin
charge 1
charge 2
a. $2.23 \times 10^{11}$ NC$^{-1}$ and $1.06 \times 10^{8}$ V
b. $2.23 \times 10^{11}$ NC$^{-1}$ and 0 V
c. 0 NC$^{-1}$ and $1.06 \times 10^{8}$ V
d. 0 NC$^{-1}$ and $5.30 \times 10^{7}$ V
e. $1.12 \times 10^{11}$ NC$^{-1}$ and $1.06 \times 10^{8}$ V
