electro

the potential decreases uniformly from V1 to V2
along x - axis in a coordinate system as one moves
from ( - a,0) to (+a,0). The field at origin is

(a) must be (V1 - V2)/2a
(b) cannot be less than (V1-V2)/2a
(c)must be smaller than (V1-V2)/2a
(d) must be greater than (V1-V2)/2a

ans is (b)
plzzzz .... explain whyy????

1 Answers

see E_x will be (V₁-V₂)/2a

but what about E_y and E_z so it can,t be less than (V₁-V₂)/2a

So Eâ‰¥(V₁-V₂)/2a
(equality holds when E_y=E_z=0)

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