Three equal charges are placed on the three corners of a square. If the force between ${q_1}$ and ${q_2}$ is ${F_{12}}$ and that between ${q_1}$ and ${q_3}$ is ${F_{13}}$, the ratio of magnitudes $\frac{{{F_{12}}}}{{{F_{13}}}}$ is

JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

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Three equal charges are placed on the three corners of a square. If the force between

{q_1}

and

{q_2}

{F_{12}}

and that between 

{q_1}

and

{q_3}

{F_{13}}

, the ratio of magnitudes

\frac{{{F_{12}}}}{{{F_{13}}}}

View answer and explanation

Correct option: B

Option B (2) is correct because the ratio of forces is inversely proportional to the square of the distance between the charges.

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r.

4N

\left( {{\varepsilon _r} = 8} \right)

N

5 \times {10^{ - 2}}