Will the electric field reduce on this plate?
I got a positively charged plate (suppose), i put a neutral plate in front of it, then i ground the neutral plate from the back surface, now this neutral plate will be induced by a negative charge. Now i put another neutral plate at the close to the back side of this induced plate, now this new neutral plate is larger in dimension than the induced neutral plate; that is this large plate overlaps the induced plate, will the electric field on the induced plate from the positively charge plate reduce?
Let A be the positively charged plate. B is the neutral plate which is placed in front of it.
B IS NOT CONNECTED TO EARTH.
By induction, the front side of B is charged negatively and the backside of B is charged positively.
The big plate placed next to B is C.
The back side of B which is positively charged induces negative charge on plate C.
There is a field between B and C.
Inside the conductor B, the side facing A has negative charges, the side facing C has positive charges. The number of charges are equal but opposite.
By Gauss’s theorem we can prove that there is no net field inside B.
B IS NOW CONNECTED TO EARTH.
All the positive charges in B are now repelled to earth.
The conductor B now becomes negatively charged and there are no positive charges.
Hence there is no field from B to C.
However, there will be field from A to C.
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