Question

A point charge Q with charge 10nC is located at (2,-1,4) meters in free space.

A point charge Qwith charge 1OnC is located at (2,-1,4) meters in free space. An intinite grounded conductor plote is placed

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Answer #1

By the method of images, due to the grounded conductor, another charge of -10nC is formed at (2,-1,-4) at the mirror location of 10nC.

Now Coulombs law in vector form is used to calculate the field E at P.

wheee keX 4Rwhes R cation t Lcation veta charge For 9-10n, -+2 209+42 . R I7V2+2= 5 X10 X10x1 2 18 V/m
Fon 9-10n C R=A-GT --g-42 +6 11 VR+62 (A+69 90 87 90 37 E, +E19- 3. 90 18 -22 37137 765 -18-5 V/m 0

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