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(A) For a parallel plate capacitor where one plate has a charge $+q$ and the other is grounded,the charge distribution results in a charge of $+q$ on

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(A) For a parallel plate capacitor where one plate has a charge $+q$ and the other is grounded,the charge distribution results in a charge of $+q$ on the inner surface of the first plate and a charge of $-q$ on the inner surface of the second plate. The outer surfaces have zero charge.$1$. At point $P$ (between the plates): The electric field due to the positively charged plate is directed away from it,and the electric field due to the negatively charged plate is directed towards it. Both fields add up,so the net electric field is non-zero.$2$. At point $P_1$ (outside the grounded plate): The electric field due to the positive plate and the negative plate cancel each other out because the net charge of the system is zero,resulting in a net electric field of zero.$3$. At point $P_2$ (outside the positive plate): Similarly,the electric fields from the positive and negative charges cancel each other out,resulting in a net electric field of zero.Therefore,the electric field is non-zero only at point $P$.

$A$ parallel plate capacitor consists of two metal plates. One plate is given a charge of $+q$,while the other is connected to the ground. Points $P, P_1$,and $P_2$ are taken as shown in the figure. At which point is the electric field $NOT$ zero?

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