Two identical metallic spheres … and … when placed at certain distance in air repel each other with a force of …. Another identical uncharged sphere … is first placed in contact with … and then in contact with … and finally placed at midpoint between spheres A and B. The force experienced by sphere C will be:

Option B. Let two identical spheres have charge q. And distance between them = r

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Electrostatics

JEE Main 2022 · 29 Jul, Evening shift · Q6930

PhysicsHard46×since 2002Q6930

Two identical metallic spheres

\mathrm{A}

and

\mathrm{B}

when placed at certain distance in air repel each other with a force of

\mathrm{F}

. Another identical uncharged sphere

\mathrm{C}

is first placed in contact with

\mathrm{A}

and then in contact with

\mathrm{B}

and finally placed at midpoint between spheres A and B. The force experienced by sphere C will be:

Electrostatics — JEE Main 2022 · 29 Jul, Evening shift · Q6930 · Alror