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JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

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Application +4 | -1

If the electrostatic force on a small sphere of charge

0.4 \mu \mathrm{C}

due to another small sphere of charge

-0.8 \mu \mathrm{C}

in air is

0.2 \mathrm{~N}.

The separation of the spheres is

\left(\mathrm{k}=9 \times 10^9 \mathrm{~N} \mathrm{~m}^2 / \mathrm{C}^2\right)

View answer and explanation

Correct option: D

12 \mathrm{~cm}

Option D (

12 \mathrm{~cm}

) is correct because it is the calculated separation using Coulomb's law with the given charges and force.

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