The electric potential decreases uniformly from 180 V to 20 V as one moves on the X-axis from
x = – 2 cm to x = + 2 cm. The electric field at the origin:
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(b, c)
from given data E x = 
V/cm = 40 V/cm
but E = 
⇒ E may be equal or greater than 40 V/cm ie.
As shown, there can be electric fields ⊥ to x axis, which will not affect the electric potential difference but can increase net field.
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