Question

The electric potential decreases uniformly from $120V$ to $80V$ as one moves on the x-axis from $x=-1cm$ to $x=+1cm$. The electric field at the origin

• A. must be equal to $20V{cm}^{-1}$
• B. may be equal to $20V{cm}^{-1}$
• C. may be greater than $20V{cm}^{-1}$
• D. may be less than $20V{cm}^{-1}$

Answer 1

Answer: (B), (C)

The correct options are
B may be equal to $20V{cm}^{-1}$
C may be greater than $20V{cm}^{-1}$