ElectrostaticsMedium
Question
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 :
Options
A.must be equal to 40V/cm.
B.may be equal to 40V/cm.
C.may be greater than 40V/cm.
D.may be less than 40V/cm.
Solution
from given data Ex = 
V/cm = 40 V/cm
but E =
⇒ E may be equal or greater than 40 V/cm ie.
V/cm = 40 V/cmbut E =
⇒ E may be equal or greater than 40 V/cm ie. Create a free account to view solution
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