Question

The ratio of electrostatic constant to gravitational constant is nearly

• A. ${10}^{10}$
• B. ${10}^5$
• C. ${10}^{20}$
• D. $100$

Answer 1

Answer: (C)

Electrostatic Constant $K=9\times {10}^{9}N{m}^2{C}^{-2}$

Gravitational Constant $G=6.67\times {10}^{-11}N{m}^{2}k{g}^{-2}$

$\Rightarrow \frac{K}{G}=\frac{9\times {10}^9}{6.67\times {10}^{-11}}=1.3493\times {10}^{20}$,

$\therefore$ The ratio of electrostatic constant to gravitational constant is nearly ${10}^{20}$