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 figure. If the electric field strength at Q and R are respectively \[{{E}_{Q}}\] and \[{{E}_{R}}\] and potential at Q and R are respectively \[{{V}_{Q}}\]and \[{{V}_{R}},\] then - |
A) \[{{E}_{Q}}>{{E}_{R}}\]
B) \[{{E}_{Q}}<{{E}_{R}}\]
C) \[{{V}_{Q}}={{V}_{R}}\]
D) \[{{V}_{Q}}<{{V}_{R}}\]
Correct Answer: B
Solution :
As we are moving away from P towards sheet S spacing between electric lines of force is increasing. |
\[\therefore \,\,\,{{E}_{R}}<{{E}_{Q}}\] |
In the direction of electric field potential decreases. |
\[\therefore \,\,\,{{V}_{R}}<{{V}_{Q}}\] |
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