Question

When air is replaced by a dielectric medium of constant K, the maximum force of attraction between tow charges separated by a distance

• A. Increases K times
• B. Remains unchanged
• C. Decreases K times
• D. Increases $K^{- 1}$times

Answer 1

Answer: (C)

Decreases K times

Answer 2

: As $F_{m} = \frac{F_{o}}{K}$

$\therefore$ The maximum force decreases by K times.