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  4. A positive point charge is placed at P in front of an earthed metal sheet S . Q and R are two points between P and S as shown in the figure. If the electric field strength at Q and R are respectively textE textQ , textE textR and potential at Q and R are respectively textV textQ , textV textR . Then <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-eeqiayonhivc.png />

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Q. A positive point charge is placed at $P$ in front of an earthed metal sheet $S$ . $Q$ and $R$ are two points between $P$ and $S$ as shown in the figure. If the electric field strength at $Q$ and $R$ are respectively $\text{E}_{\text{Q}}$ , $\text{E}_{\text{R}}$ and potential at $Q$ and $R$ are respectively $\text{V}_{\text{Q}}$ , $\text{V}_{\text{R}}$ . Then

Question

NTA AbhyasNTA Abhyas 2020Electrostatic Potential and Capacitance

Solution:

Solution
As we are are moving away from $P$ toward sheet $S$ spacing between electric lines of force is increasing. $ \, \therefore E_{R} < E_{Q}$ In direction of electric field potential decreases. $\therefore V_{R} \, < \, V_{Q}$