Electrostatics Question 702

Question: The number of electric lines of force that radiate outwards from one coulomb of charge in vacuum is

Options:

A) $ 1.13\times 10^{11} $

B) $ 1.13\times 10^{10} $

C) $ 0.61\times 10^{11} $

D) $ 0.61\times 10^{9} $

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Answer:

Correct Answer: A

Solution:

[a] Here, $ q=1C,{\varepsilon _{0}}=8.85\times {{10}^{-12}}C^{2}{{N}^{-1}}{{m}^{-2}} $

Number of lines of force=Electric force $ =\frac{q}{{\varepsilon _{0}}}=\frac{1}{8.85\times {{10}^{-12}}}=1.13\times 10^{11} $



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