Question

A charge of 1 mC is divided into two parts such that their charges are in the ratio of 2 : 3. These two charges are kept at a distance 1 m apart in vacuum. Then, the electric force between them (in N) is-

• A. 0.216
• B. 0.00216
• C. 0.0216
• D. 2.16

Answer 1

Answer: (B)

0.00216

Answer 2

q₁ + q₂ = 1mC

q₁ = $\frac { 2 } { 5 }$mC , q₂ = $\frac { 3 } { 5 }$mC

F = $\frac { K q _ { 1 } q _ { 2 } } { r ^ { 2 } }$