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  • When a charge Q is given to an isolated metal plate X of a surface area, its charge density becomes <img alt="\sigma _{1}" src="https://entrancecorner.oncodecogs.com/gif.latex?%5Csigma%20_%7B1

When a charge Q is given to an isolated metal plate X of a surface area, its charge density becomes \sigma _{1}, when an isolated identical plate is brought close to X the surface charge density of X becomes \sigma _{2}, when Y is earthed, the surface charge density becomes \sigma _{3}, then

Option: 1

\sigma_1=\frac{Q}{A}


Option: 2

\sigma_1=\frac{Q}{2 A}


Option: 3

\sigma_1=\frac{1}{\sigma_2}


Option: 4

\sigma_3=4 \sigma_1


Answers (1)

best_answer

When there is only plate X, the dendity, \begin{aligned} & \sigma_1=\frac{Q / 2}{A} \\ & \sigma_1=\frac{Q}{2 A} \end{aligned}

 

 

When plate Y is brougth close to X, 

When Y is earthed, \sigma_3=\frac{Q}{A}

Posted by

Kuldeep Maurya

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