A point charge 10 µC is located at origin (x = 0, y = 0) m, and another point charge 5 µC is placed on the point (x = 6, y = 8) m. in vacuum. Determine the electric force (in N units) on charge 5 µC. Assume the value of permittivity of free space (vacuum) ε0 = 9 × 10-12 C2.N-1.m-2
1
\(1\over36\ \pi\)
2
72 π
3
\(1\over72\ \pi\)
4
\(1\over18\ \pi\)