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NOW I GOT IT :)
THANKS A LOT SUBHO :) TKS A TON TIIT :)
The electric potential decreases uniformly from 120 V to 80 V as one moves from x= - 1 cm to x= + 1 cm.THE ELECTRIC FIELD AT THE ORIGIN IS :
A)must be = 20V per cm
B)may be = 20V per cm
C)may be greater than 20V per cm
D)may be less than 20V per cm
GIVE REASONS FOR YOUR ANSWER
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6 Answers
49-ΔVΔx=Ex=20V/cm
now this is the magnitude of only the X component of the existent electric field..
thus the field may be 20V/cm or may be greater
thus b,c
1HOW CAN THE FIELD LINES INTERSECT ?..plz n e one help ... my concept is wrong... the value shud be ..20
23arey dude consider Eo = Ex (i) + Ey (j)
u found Ex = 20 at origin
so at origin Eo = √202+Ey2 ≥ 20 , wich depends on Ey
now dont tell that Ex and Ey cant intersect at origin ,
actually dey r just the components of Eo at origin ,
actual field line at origin is Eo wich is inclined at angle θ= tan-1( EyEx)