Two identical charged particles each having a mass 10 ,g and charge 2.0 × 10^{-7},C area placed on

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1. Electric Charges and Fields

medium

Two identical charged particles each having a mass $10 \,g$ and charge $2.0 \times 10^{-7}\,C$ area placed on a horizontal table with a separation of $L$ between then such that they stay in limited equilibrium. If the coefficient of friction between each particle and the table is $0.25$, find the value of $L$.[Use $g =10\,ms ^{-2}$ ]..........$cm$

A

$12$

B

$10$

C

$8$

D

$5$

(JEE MAIN-2022)

Solution

$\frac{ kq ^{2}}{ L ^{2}}=\mu mg \Rightarrow L =\sqrt{\frac{ k }{\mu mg } q }$

Standard 12

Physics

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