Question

vi) The electric potential, V in a region is given by V = 10x2 - 10x + 15. The value of
electric field at x = 2 is
a) -30V/m
b) +30V/m
c) +35V/m
d) +15V/m
contence
(3)​

Answer 1

Answer:

-30v/m.

Explanation:

We know, E= -dv÷dx

V=10x^2-10x+15

By differentiating both L.H.S and R.H.S with respect to x, we get

dV÷dx=20x-10+0

So, therefore, E= -(20x-10)

For x=2m, the value of E= -(20×2-10)= -30 v/m

HOPE YOU'LL MARK ME AS THE BRAINLIEST...