Question

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

Answer 1

E = -dV/dx 

Since V decreases uniformly, E = -ΔV/Δx 

= -(80 - 120)/{1- (-1)} 

= - ( -40)/2 

= 20 V/Cm in the positive direction of x axis.


ANSWER:

May be equal to to 20V/vm

May be greater than 20V/cm